Revert "Merge branch 'palfaiate-dev-patch-24781' into 'dev'"

This reverts merge request !62

src/core/crypto/key_manager.h

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project & 2024 suyu Emulator Project
+// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #pragma once
@@ -314,8 +314,6 @@ private:
     bool dev_mode;
     void LoadFromFile(const std::filesystem::path& file_path, bool is_title_keys);
 
-    template <size_t Size>
-
     void DeriveGeneralPurposeKeys(std::size_t crypto_revision);
 
     void DeriveETicketRSAKey();