ogl: don't call SetViewportChanged from backend as it's not needed any more

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

@@ -37,7 +37,6 @@
 #include "TextureCache.h"
 #include "TextureConverter.h"
 #include "TextureDecoder.h"
-#include "VertexShaderManager.h"
 #include "VideoConfig.h"
 
 namespace OGL
@@ -391,7 +390,6 @@ void TextureCache::TCacheEntry::FromRenderTarget(u32 dstAddr, unsigned int dstFo
 	}
 
 	FramebufferManager::SetFramebuffer(0);
-	VertexShaderManager::SetViewportChanged();
 
 	GL_REPORT_ERRORD();