gl_buffer_cache: Remove unnecessary includes

src/video_core/renderer_opengl/gl_buffer_cache.cpp

@@ -2,8 +2,10 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include <cstring>
+#include <memory>
+
 #include "common/alignment.h"
-#include "common/assert.h"
 #include "core/core.h"
 #include "core/memory.h"
 #include "video_core/renderer_opengl/gl_buffer_cache.h"

src/video_core/renderer_opengl/gl_buffer_cache.h

@@ -4,8 +4,8 @@
 
 #pragma once
 
+#include <cstddef>
 #include <memory>
-#include <unordered_map>
 
 #include "common/common_types.h"
 #include "video_core/rasterizer_cache.h"