scripted-diff: remove MakeUnique<T>()

-BEGIN VERIFY SCRIPT-
git rm src/util/memory.h
sed -i -e 's/MakeUnique/std::make_unique/g' $(git grep -l MakeUnique src)
sed -i -e '/#include <util\/memory.h>/d' $(git grep -l '#include <util/memory.h>' src)
sed -i -e '/util\/memory.h \\/d' src/Makefile.am
-END VERIFY SCRIPT-

src/util/memory.h

@@ -1,20 +0,0 @@
-// Copyright (c) 2009-2010 Satoshi Nakamoto
-// Copyright (c) 2009-2020 The Bitcoin Core developers
-// Distributed under the MIT software license, see the accompanying
-// file COPYING or http://www.opensource.org/licenses/mit-license.php.
-
-#ifndef BITCOIN_UTIL_MEMORY_H
-#define BITCOIN_UTIL_MEMORY_H
-
-#include <memory>
-#include <utility>
-
-//! Substitute for C++14 std::make_unique.
-//! DEPRECATED use std::make_unique in new code.
-template <typename T, typename... Args>
-std::unique_ptr<T> MakeUnique(Args&&... args)
-{
-    return std::make_unique<T>(std::forward<Args>(args)...);
-}
-
-#endif

src/util/system.cpp

@@ -100,7 +100,7 @@ bool LockDirectory(const fs::path& directory, const std::string lockfile_name, b
     // Create empty lock file if it doesn't exist.
     FILE* file = fsbridge::fopen(pathLockFile, "a");
     if (file) fclose(file);
-    auto lock = MakeUnique<fsbridge::FileLock>(pathLockFile);
+    auto lock = std::make_unique<fsbridge::FileLock>(pathLockFile);
     if (!lock->TryLock()) {
         return error("Error while attempting to lock directory %s: %s", directory.string(), lock->GetReason());
     }

src/util/system.h

@@ -22,7 +22,6 @@
 #include <optional.h>
 #include <sync.h>
 #include <tinyformat.h>
-#include <util/memory.h>
 #include <util/settings.h>
 #include <util/threadnames.h>
 #include <util/time.h>