hle: kernel: k_light_condition_variable: Revert unnecessary license comment changes.

src/core/hle/kernel/k_light_condition_variable.h

@@ -1,4 +1,4 @@
-// Copyright 2021 yuzu Emulator Project
+// Copyright 2020 yuzu Emulator Project
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.