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diff --git a/plugins/gpu_senquack/gpu_inner_quantization.h b/plugins/gpu_senquack/gpu_inner_quantization.h
deleted file mode 100644
index 6432d031..00000000
--- a/plugins/gpu_senquack/gpu_inner_quantization.h
+++ /dev/null
@@ -1,108 +0,0 @@
-/***************************************************************************
-*   Copyright (C) 2016 PCSX4ALL Team                                      *
-*                                                                         *
-*   This program is free software; you can redistribute it and/or modify  *
-*   it under the terms of the GNU General Public License as published by  *
-*   the Free Software Foundation; either version 2 of the License, or     *
-*   (at your option) any later version.                                   *
-*                                                                         *
-*   This program is distributed in the hope that it will be useful,       *
-*   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
-*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
-*   GNU General Public License for more details.                          *
-*                                                                         *
-*   You should have received a copy of the GNU General Public License     *
-*   along with this program; if not, write to the                         *
-*   Free Software Foundation, Inc.,                                       *
-*   51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA.           *
-***************************************************************************/
-
-#ifndef _OP_DITHER_H_
-#define _OP_DITHER_H_
-
-static void SetupDitheringConstants()
-{
-	// Initialize Dithering Constants
-	// The screen is divided into 8x8 chunks and sub-unitary noise is applied
-	// using the following matrix. This ensures that data lost in color
-	// quantization will be added back to the image 'by chance' in predictable
-	// patterns that are naturally 'smoothed' by your sight when viewed from a
-	// certain distance.
-	//
-	// http://caca.zoy.org/study/index.html
-	//
-	// Shading colors are encoded in 4.5, and then are quantitized to 5.0,
-	// DitherMatrix constants reflect that.
-
-	static const u8 DitherMatrix[] = {
-		 0, 32,  8, 40,  2, 34, 10, 42,
-		48, 16, 56, 24, 50, 18, 58, 26,
-		12, 44,  4, 36, 14, 46,  6, 38,
-		60, 28, 52, 20, 62, 30, 54, 22,
-		 3, 35, 11, 43,  1, 33,  9, 41,
-		51, 19, 59, 27, 49, 17, 57, 25,
-		15, 47,  7, 39, 13, 45,  5, 37,
-		63, 31, 55, 23, 61, 29, 53, 21
-	};
-
-	int i, j;
-	for (i = 0; i < 8; i++)
-	{
-		for (j = 0; j < 8; j++)
-		{
-			u16 offset = (i << 3) | j;
-
-			u32 component = ((DitherMatrix[offset] + 1) << 4) / 65; //[5.5] -> [5]
-
-			// XXX - senquack - hack Dec 2016
-			//  Until JohnnyF gets the time to work further on dithering,
-			//   force lower bit of component to 0. This fixes grid pattern
-			//   affecting quality of dithered image, as well as loss of
-			//   detail in dark areas. With lower bit unset like this, existing
-			//   27-bit accuracy of dithering math is unneeded, could be 24-bit.
-			//   Is 8x8 matrix overkill as a result, can we use 4x4?
-			component &= ~1;
-
-			gpu_senquack.DitherMatrix[offset] = (component)
-			                              | (component << 10)
-			                              | (component << 20);
-		}
-	}
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// Convert padded u32 5.4:5.4:5.4 bgr fixed-pt triplet to final bgr555 color,
-//  applying dithering if specified by template parameter.
-//
-// INPUT:
-//     'uSrc24' input: 000bbbbbXXXX0gggggXXXX0rrrrrXXXX
-//                     ^ bit 31
-//       'pDst' is a pointer to destination framebuffer pixel, used
-//         to determine which DitherMatrix[] entry to apply.
-// RETURNS:
-//         u16 output: 0bbbbbgggggrrrrr
-//                     ^ bit 16
-// Where 'X' are fixed-pt bits, '0' is zero-padding, and '-' is don't care
-////////////////////////////////////////////////////////////////////////////////
-template <int DITHER>
-GPU_INLINE u16 gpuColorQuantization24(u32 uSrc24, const u16 *pDst)
-{
-	if (DITHER)
-	{
-		u16 fbpos  = (u32)(pDst - gpu_senquack.vram);
-		u16 offset = ((fbpos & (0x7 << 10)) >> 7) | (fbpos & 0x7);
-
-		//clean overflow flags and add
-		uSrc24 = (uSrc24 & 0x1FF7FDFF) + gpu_senquack.DitherMatrix[offset];
-
-		if (uSrc24 & (1<< 9)) uSrc24 |= (0x1FF    );
-		if (uSrc24 & (1<<19)) uSrc24 |= (0x1FF<<10);
-		if (uSrc24 & (1<<29)) uSrc24 |= (0x1FF<<20);
-	}
-
-	return ((uSrc24>> 4) & (0x1F    ))
-	     | ((uSrc24>> 9) & (0x1F<<5 ))
-	     | ((uSrc24>>14) & (0x1F<<10));
-}
-
-#endif //_OP_DITHER_H_