video_core/memory_manager: Remove unused CopyBlockUnsafe

This function was not being used.

src/video_core/memory_manager.cpp

@@ -339,13 +339,6 @@ void MemoryManager::CopyBlock(GPUVAddr gpu_dest_addr, GPUVAddr gpu_src_addr, std
     WriteBlock(gpu_dest_addr, tmp_buffer.data(), size);
 }
 
-void MemoryManager::CopyBlockUnsafe(GPUVAddr gpu_dest_addr, GPUVAddr gpu_src_addr,
-                                    std::size_t size) {
-    std::vector<u8> tmp_buffer(size);
-    ReadBlockUnsafe(gpu_src_addr, tmp_buffer.data(), size);
-    WriteBlockUnsafe(gpu_dest_addr, tmp_buffer.data(), size);
-}
-
 bool MemoryManager::IsGranularRange(GPUVAddr gpu_addr, std::size_t size) const {
     const auto cpu_addr{GpuToCpuAddress(gpu_addr)};
     if (!cpu_addr) {

src/video_core/memory_manager.h

@@ -107,7 +107,6 @@ public:
      */
     void ReadBlockUnsafe(GPUVAddr gpu_src_addr, void* dest_buffer, std::size_t size) const;
     void WriteBlockUnsafe(GPUVAddr gpu_dest_addr, const void* src_buffer, std::size_t size);
-    void CopyBlockUnsafe(GPUVAddr gpu_dest_addr, GPUVAddr gpu_src_addr, std::size_t size);
 
     /**
      * IsGranularRange checks if a gpu region can be simply read with a pointer.