Remove some unused/unnecessary code

Core/System.cpp

@@ -599,7 +599,6 @@ void PSP_RunLoopUntil(u64 globalticks) {
 	}
 
 	mipsr4k.RunLoopUntil(globalticks);
-	gpu->CleanupBeforeUI();
 }
 
 void PSP_RunLoopFor(int cycles) {

GPU/D3D11/GPU_D3D11.cpp

@@ -223,11 +223,6 @@ void GPU_D3D11::GetStats(char *buffer, size_t bufsize) {
 	);
 }
 
-void GPU_D3D11::ClearShaderCache() {
-	shaderManagerD3D11_->ClearShaders();
-	drawEngine_.ClearInputLayoutMap();
-}
-
 void GPU_D3D11::DoState(PointerWrap &p) {
 	GPUCommon::DoState(p);
 

GPU/D3D11/GPU_D3D11.h

@@ -46,8 +46,6 @@ public:
 
 	void DoState(PointerWrap &p) override;
 
-	void ClearShaderCache() override;
-
 	// Using string because it's generic - makes no assumptions on the size of the shader IDs of this backend.
 	std::vector<std::string> DebugGetShaderIDs(DebugShaderType shader) override;
 	std::string DebugGetShaderString(std::string id, DebugShaderType shader, DebugShaderStringType stringType) override;

GPU/Directx9/GPU_DX9.cpp

@@ -220,10 +220,6 @@ void GPU_DX9::GetStats(char *buffer, size_t bufsize) {
 	);
 }
 
-void GPU_DX9::ClearShaderCache() {
-	shaderManagerDX9_->ClearCache(true);
-}
-
 void GPU_DX9::DoState(PointerWrap &p) {
 	GPUCommon::DoState(p);
 

GPU/Directx9/GPU_DX9.h

@@ -46,8 +46,6 @@ public:
 
 	void DoState(PointerWrap &p) override;
 
-	void ClearShaderCache() override;
-
 	// Using string because it's generic - makes no assumptions on the size of the shader IDs of this backend.
 	std::vector<std::string> DebugGetShaderIDs(DebugShaderType shader) override;
 	std::string DebugGetShaderString(std::string id, DebugShaderType shader, DebugShaderStringType stringType) override;

GPU/GLES/GPU_GLES.cpp

@@ -362,15 +362,6 @@ void GPU_GLES::GetStats(char *buffer, size_t bufsize) {
 	);
 }
 
-void GPU_GLES::ClearShaderCache() {
-	shaderManagerGL_->ClearCache(true);
-}
-
-void GPU_GLES::CleanupBeforeUI() {
-	// Clear any enabled vertex arrays.
-	shaderManagerGL_->DirtyLastShader();
-}
-
 void GPU_GLES::DoState(PointerWrap &p) {
 	GPUCommon::DoState(p);
 

GPU/GLES/GPU_GLES.h

@@ -54,9 +54,6 @@ public:
 
 	void DoState(PointerWrap &p) override;
 
-	void ClearShaderCache() override;
-	void CleanupBeforeUI() override;
-
 	// Using string because it's generic - makes no assumptions on the size of the shader IDs of this backend.
 	std::vector<std::string> DebugGetShaderIDs(DebugShaderType shader) override;
 	std::string DebugGetShaderString(std::string id, DebugShaderType shader, DebugShaderStringType stringType) override;

GPU/GPUCommon.h

@@ -243,8 +243,6 @@ public:
 		return dlQueue;
 	}
 	std::vector<FramebufferInfo> GetFramebufferList() const override;
-	void ClearShaderCache() override {}
-	void CleanupBeforeUI() override {}
 
 	s64 GetListTicks(int listid) const override {
 		if (listid >= 0 && listid < DisplayListMaxCount) {

GPU/GPUInterface.h

@@ -261,8 +261,6 @@ public:
 	virtual void NotifyRenderResized() = 0;
 	virtual void NotifyConfigChanged() = 0;
 
-	virtual void ClearShaderCache() = 0;
-	virtual void CleanupBeforeUI() = 0;
 	virtual bool FramebufferDirty() = 0;
 	virtual bool FramebufferReallyDirty() = 0;
 	virtual bool BusyDrawing() = 0;

GPU/Vulkan/GPU_Vulkan.cpp

@@ -528,10 +528,6 @@ void GPU_Vulkan::GetStats(char *buffer, size_t bufsize) {
 	);
 }
 
-void GPU_Vulkan::ClearShaderCache() {
-	// TODO
-}
-
 void GPU_Vulkan::DoState(PointerWrap &p) {
 	GPUCommon::DoState(p);
 

GPU/Vulkan/GPU_Vulkan.h

@@ -56,8 +56,6 @@ public:
 
 	void DoState(PointerWrap &p) override;
 
-	void ClearShaderCache() override;
-
 	// Using string because it's generic - makes no assumptions on the size of the shader IDs of this backend.
 	std::vector<std::string> DebugGetShaderIDs(DebugShaderType shader) override;
 	std::string DebugGetShaderString(std::string id, DebugShaderType shader, DebugShaderStringType stringType) override;