texture_cache: Don't change copyright year

src/video_core/renderer_opengl/gl_texture_cache.cpp

@@ -1,4 +1,4 @@
-// Copyright 2021 yuzu Emulator Project
+// Copyright 2019 yuzu Emulator Project
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 

src/video_core/renderer_vulkan/vk_texture_cache.cpp

@@ -1,4 +1,4 @@
-// Copyright 2021 yuzu Emulator Project
+// Copyright 2019 yuzu Emulator Project
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 

src/video_core/texture_cache/texture_cache.h

@@ -1,4 +1,4 @@
-// Copyright 2021 yuzu Emulator Project
+// Copyright 2019 yuzu Emulator Project
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 

src/video_core/texture_cache/texture_cache_base.h

@@ -1,4 +1,4 @@
-// Copyright 2021 yuzu Emulator Project
+// Copyright 2019 yuzu Emulator Project
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.