VideoConfig: Drop force vertex/pixel ubershader settings

This was mainly included for debugging, but could end up being confusing
for users, as well as polluting the GL program cache with a mix of uber
and specialized shaders if the option was changed.

Source/Core/VideoBackends/D3D/PixelShaderCache.cpp

@@ -593,7 +593,7 @@ void PixelShaderCache::Shutdown()
 
 bool PixelShaderCache::SetShader()
 {
-  if (g_ActiveConfig.bDisableSpecializedShaders || g_ActiveConfig.bForcePixelUberShaders)
+  if (g_ActiveConfig.bDisableSpecializedShaders)
     return SetUberShader();
 
   PixelShaderUid uid = GetPixelShaderUid();