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diff --git a/plugins/AdvaImg/src/FreeImageToolkit/Display.cpp b/plugins/AdvaImg/src/FreeImageToolkit/Display.cpp
deleted file mode 100644
index 82885dcf34..0000000000
--- a/plugins/AdvaImg/src/FreeImageToolkit/Display.cpp
+++ /dev/null
@@ -1,230 +0,0 @@
-// ==========================================================
-// Display routines
-//
-// Design and implementation by
-// - Hervé Drolon (drolon@infonie.fr)
-//
-// This file is part of FreeImage 3
-//
-// COVERED CODE IS PROVIDED UNDER THIS LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTY
-// OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, WARRANTIES
-// THAT THE COVERED CODE IS FREE OF DEFECTS, MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE
-// OR NON-INFRINGING. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE COVERED
-// CODE IS WITH YOU. SHOULD ANY COVERED CODE PROVE DEFECTIVE IN ANY RESPECT, YOU (NOT
-// THE INITIAL DEVELOPER OR ANY OTHER CONTRIBUTOR) ASSUME THE COST OF ANY NECESSARY
-// SERVICING, REPAIR OR CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL
-// PART OF THIS LICENSE. NO USE OF ANY COVERED CODE IS AUTHORIZED HEREUNDER EXCEPT UNDER
-// THIS DISCLAIMER.
-//
-// Use at your own risk!
-// ==========================================================
-
-#include "FreeImage.h"
-#include "Utilities.h"
-
-
-/**
-@brief Composite a foreground image against a background color or a background image.
-
-The equation for computing a composited sample value is:<br>
-output = alpha * foreground + (1-alpha) * background<br>
-where alpha and the input and output sample values are expressed as fractions in the range 0 to 1. 
-For colour images, the computation is done separately for R, G, and B samples.
-
-@param fg Foreground image
-@param useFileBkg If TRUE and a file background is present, use it as the background color
-@param appBkColor If not equal to NULL, and useFileBkg is FALSE, use this color as the background color
-@param bg If not equal to NULL and useFileBkg is FALSE and appBkColor is NULL, use this as the background image
-@return Returns the composite image if successful, returns NULL otherwise
-@see FreeImage_IsTransparent, FreeImage_HasBackgroundColor
-*/
-FIBITMAP * DLL_CALLCONV
-FreeImage_Composite(FIBITMAP *fg, BOOL useFileBkg, RGBQUAD *appBkColor, FIBITMAP *bg) {
-	if(!FreeImage_HasPixels(fg)) return NULL;
-
-	int width  = FreeImage_GetWidth(fg);
-	int height = FreeImage_GetHeight(fg);
-	int bpp    = FreeImage_GetBPP(fg);
-
-	if((bpp != 8) && (bpp != 32))
-		return NULL;
-
-	if(bg) {
-		int bg_width  = FreeImage_GetWidth(bg);
-		int bg_height = FreeImage_GetHeight(bg);
-		int bg_bpp    = FreeImage_GetBPP(bg);
-		if((bg_width != width) || (bg_height != height) || (bg_bpp != 24))
-			return NULL;
-	}
-
-	int bytespp = (bpp == 8) ? 1 : 4;
-
-	
-	int x, y, c;
-	BYTE alpha = 0, not_alpha;
-	BYTE index;
-	RGBQUAD fgc;	// foreground color
-	RGBQUAD bkc;	// background color
-
-	memset(&fgc, 0, sizeof(RGBQUAD));
-	memset(&bkc, 0, sizeof(RGBQUAD));
-
-	// allocate the composite image
-	FIBITMAP *composite = FreeImage_Allocate(width, height, 24, FI_RGBA_RED_MASK, FI_RGBA_GREEN_MASK, FI_RGBA_BLUE_MASK);
-	if(!composite) return NULL;
-
-	// get the palette
-	RGBQUAD *pal = FreeImage_GetPalette(fg);
-
-	// retrieve the alpha table from the foreground image
-	BOOL bIsTransparent = FreeImage_IsTransparent(fg);
-	BYTE *trns = FreeImage_GetTransparencyTable(fg);
-
-	// retrieve the background color from the foreground image
-	BOOL bHasBkColor = FALSE;
-
-	if(useFileBkg && FreeImage_HasBackgroundColor(fg)) {
-		FreeImage_GetBackgroundColor(fg, &bkc);
-		bHasBkColor = TRUE;
-	} else {
-		// no file background color
-		// use application background color ?
-		if(appBkColor) {
-			memcpy(&bkc, appBkColor, sizeof(RGBQUAD));
-			bHasBkColor = TRUE;
-		}
-		// use background image ?
-		else if(bg) {
-			bHasBkColor = FALSE;
-		}
-	}
-
-	for(y = 0; y < height; y++) {
-		// foreground
-		BYTE *fg_bits = FreeImage_GetScanLine(fg, y);
-		// background
-		BYTE *bg_bits = FreeImage_GetScanLine(bg, y);
-		// composite image
-		BYTE *cp_bits = FreeImage_GetScanLine(composite, y);
-
-		for(x = 0; x < width; x++) {
-
-			// foreground color + alpha
-
-			if(bpp == 8) {
-				// get the foreground color
-				index = fg_bits[0];
-				memcpy(&fgc, &pal[index], sizeof(RGBQUAD));
-				// get the alpha
-				if(bIsTransparent) {
-					alpha = trns[index];
-				} else {
-					alpha = 255;
-				}
-			}
-			else if(bpp == 32) {
-				// get the foreground color
-				fgc.rgbBlue  = fg_bits[FI_RGBA_BLUE];
-				fgc.rgbGreen = fg_bits[FI_RGBA_GREEN];
-				fgc.rgbRed   = fg_bits[FI_RGBA_RED];
-				// get the alpha
-				alpha = fg_bits[FI_RGBA_ALPHA];
-			}
-
-			// background color
-
-			if(!bHasBkColor) {
-				if(bg) {
-					// get the background color from the background image
-					bkc.rgbBlue  = bg_bits[FI_RGBA_BLUE];
-					bkc.rgbGreen = bg_bits[FI_RGBA_GREEN];
-					bkc.rgbRed   = bg_bits[FI_RGBA_RED];
-				}
-				else {
-					// use a checkerboard pattern
-					c = (((y & 0x8) == 0) ^ ((x & 0x8) == 0)) * 192;
-					c = c ? c : 255;
-					bkc.rgbBlue  = (BYTE)c;
-					bkc.rgbGreen = (BYTE)c;
-					bkc.rgbRed   = (BYTE)c;
-				}
-			}
-
-			// composition
-
-			if(alpha == 0) {
-				// output = background
-				cp_bits[FI_RGBA_BLUE] = bkc.rgbBlue;
-				cp_bits[FI_RGBA_GREEN] = bkc.rgbGreen;
-				cp_bits[FI_RGBA_RED] = bkc.rgbRed;
-			}
-			else if(alpha == 255) {
-				// output = foreground
-				cp_bits[FI_RGBA_BLUE] = fgc.rgbBlue;
-				cp_bits[FI_RGBA_GREEN] = fgc.rgbGreen;
-				cp_bits[FI_RGBA_RED] = fgc.rgbRed;
-			}
-			else {
-				// output = alpha * foreground + (1-alpha) * background
-				not_alpha = (BYTE)~alpha;
-				cp_bits[FI_RGBA_BLUE] = (BYTE)((alpha * (WORD)fgc.rgbBlue  + not_alpha * (WORD)bkc.rgbBlue) >> 8);
-				cp_bits[FI_RGBA_GREEN] = (BYTE)((alpha * (WORD)fgc.rgbGreen + not_alpha * (WORD)bkc.rgbGreen) >> 8);
-				cp_bits[FI_RGBA_RED] = (BYTE)((alpha * (WORD)fgc.rgbRed   + not_alpha * (WORD)bkc.rgbRed) >> 8);
-			}
-
-			fg_bits += bytespp;
-			bg_bits += 3;
-			cp_bits += 3;
-		}
-	}
-
-	// copy metadata from src to dst
-	FreeImage_CloneMetadata(composite, fg);
-	
-	return composite;	
-}
-
-/**
-Pre-multiplies a 32-bit image's red-, green- and blue channels with it's alpha channel 
-for to be used with e.g. the Windows GDI function AlphaBlend(). 
-The transformation changes the red-, green- and blue channels according to the following equation:  
-channel(x, y) = channel(x, y) * alpha_channel(x, y) / 255  
-@param dib Input/Output dib to be premultiplied
-@return Returns TRUE on success, FALSE otherwise (e.g. when the bitdepth of the source dib cannot be handled). 
-*/
-BOOL DLL_CALLCONV 
-FreeImage_PreMultiplyWithAlpha(FIBITMAP *dib) {
-	if (!FreeImage_HasPixels(dib)) return FALSE;
-	
-	if ((FreeImage_GetBPP(dib) != 32) || (FreeImage_GetImageType(dib) != FIT_BITMAP)) {
-		return FALSE;
-	}
-
-	int width = FreeImage_GetWidth(dib);
-	int height = FreeImage_GetHeight(dib);
-
-	for(int y = 0; y < height; y++) {
-		BYTE *bits = FreeImage_GetScanLine(dib, y);
-		for (int x = 0; x < width; x++, bits += 4) {
-			const BYTE alpha = bits[FI_RGBA_ALPHA];
-			// slightly faster: care for two special cases
-			if(alpha == 0x00) {
-				// special case for alpha == 0x00
-				// color * 0x00 / 0xFF = 0x00
-				bits[FI_RGBA_BLUE] = 0x00;
-				bits[FI_RGBA_GREEN] = 0x00;
-				bits[FI_RGBA_RED] = 0x00;
-			} else if(alpha == 0xFF) {
-				// nothing to do for alpha == 0xFF
-				// color * 0xFF / 0xFF = color
-				continue;
-			} else {
-				bits[FI_RGBA_BLUE] = (BYTE)( (alpha * (WORD)bits[FI_RGBA_BLUE] + 127) / 255 );
-				bits[FI_RGBA_GREEN] = (BYTE)( (alpha * (WORD)bits[FI_RGBA_GREEN] + 127) / 255 );
-				bits[FI_RGBA_RED] = (BYTE)( (alpha * (WORD)bits[FI_RGBA_RED] + 127) / 255 );
-			}
-		}
-	}
-	return TRUE;
-}
-