scripted-diff: Rename MakeFuzzingContext to MakeNoLogFileContext

-BEGIN VERIFY SCRIPT-
 # Rename
 sed -i -e 's/MakeFuzzingContext/MakeNoLogFileContext/g' $(git grep -l MakeFuzzingContext)
 # Bump the copyright of touched files in this scripted diff to avoid touching them again later
 ./contrib/devtools/copyright_header.py update ./src/test/fuzz/
-END VERIFY SCRIPT-

src/test/fuzz/pow.cpp

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 The Bitcoin Core developers
+// Copyright (c) 2020-2021 The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.