ogl: implement useful constant buffer upload

this will remove the additional memcpy introduced in my last commit

Source/Core/VideoBackends/OGL/Src/PixelShaderCache.cpp

@@ -27,20 +27,5 @@ namespace OGL
 // Renderer functions
 void Renderer::SetMultiPSConstant4fv(unsigned int const_number, unsigned int count, const float *f)
 {
-	if (g_ActiveConfig.backend_info.bSupportsGLSLUBO)
-	{
-		ProgramShaderCache::SetMultiPSConstant4fv(const_number, f, count);
-		return;
-	}
-	
-	ProgramShaderCache::PCacheEntry tmp = ProgramShaderCache::GetShaderProgram();
-	for (unsigned int a = 0; a < 10; ++a)
-	{
-		u32 offset = PSVar_Loc[a].reg - const_number;
-		if(offset >= count) return;
-		u32 size = std::min(tmp.shader.UniformSize[a], count-offset);
-		if(size > 0)
-			glUniform4fv(tmp.shader.UniformLocations[a], size, f + 4*offset);
-	}
 }
 }  // namespace OGL