Revert the recent zcomploc changes including the Graphic_Fixes merge.

Reason:
- It's wrong, zcomploc can't be emulated perfectly in HW backends without severely impacting performance.
- It provides virtually no advantages over the previous hack while introducing lots of code.
- There is a better alternative: If people insist on having some sort of valid zcomploc emulation, I suggest rendering each primitive separately while using a _clean_ dual-pass approach to emulate zcomploc.

This reverts commit 0efd4e5c29.
This reverts commit b4ec836aca.
This reverts commit bb4c9e2205.
This reverts commit 146b02615c.

Source/Core/VideoCommon/Src/PixelShaderManager.h

@@ -54,7 +54,6 @@ public:
 	static void SetColorMatrix(const float* pmatrix);
 	static void InvalidateXFRange(int start, int end);
 	static void SetMaterialColorChanged(int index);
-	static ALPHA_PRETEST_RESULT AlphaPreTest();
 	
 };