gl_rasterizer: Remove unused reference member variable from RasterizerOpenGL

This member variable is no longer being used, so it can be removed,
removing a dependency on EmuWindow from the rasterizer's interface"

src/video_core/renderer_opengl/gl_rasterizer.cpp

@@ -100,11 +100,9 @@ struct FramebufferCacheKey {
     }
 };
 
-RasterizerOpenGL::RasterizerOpenGL(Core::Frontend::EmuWindow& window, Core::System& system,
-                                   ScreenInfo& info)
-    : res_cache{*this}, shader_cache{*this, system}, global_cache{*this},
-      emu_window{window}, system{system}, screen_info{info},
-      buffer_cache(*this, STREAM_BUFFER_SIZE) {
+RasterizerOpenGL::RasterizerOpenGL(Core::System& system, ScreenInfo& info)
+    : res_cache{*this}, shader_cache{*this, system}, global_cache{*this}, system{system},
+      screen_info{info}, buffer_cache(*this, STREAM_BUFFER_SIZE) {
     // Create sampler objects
     for (std::size_t i = 0; i < texture_samplers.size(); ++i) {
         texture_samplers[i].Create();

src/video_core/renderer_opengl/gl_rasterizer.h

@@ -50,8 +50,7 @@ struct FramebufferCacheKey;
 
 class RasterizerOpenGL : public VideoCore::RasterizerInterface {
 public:
-    explicit RasterizerOpenGL(Core::Frontend::EmuWindow& window, Core::System& system,
-                              ScreenInfo& info);
+    explicit RasterizerOpenGL(Core::System& system, ScreenInfo& info);
     ~RasterizerOpenGL() override;
 
     void DrawArrays() override;
@@ -214,7 +213,6 @@ private:
     ShaderCacheOpenGL shader_cache;
     GlobalRegionCacheOpenGL global_cache;
 
-    Core::Frontend::EmuWindow& emu_window;
     Core::System& system;
 
     ScreenInfo& screen_info;

src/video_core/renderer_opengl/renderer_opengl.cpp

@@ -266,7 +266,7 @@ void RendererOpenGL::CreateRasterizer() {
     }
     // Initialize sRGB Usage
     OpenGLState::ClearsRGBUsed();
-    rasterizer = std::make_unique<RasterizerOpenGL>(render_window, system, screen_info);
+    rasterizer = std::make_unique<RasterizerOpenGL>(system, screen_info);
 }
 
 void RendererOpenGL::ConfigureFramebufferTexture(TextureInfo& texture,