Remove includes in .cpp files for things the corresponding .h file already included

src/netaddress.cpp

@@ -3,10 +3,6 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-#ifdef HAVE_CONFIG_H
-#include <config/bitcoin-config.h>
-#endif
-
 #include <netaddress.h>
 #include <hash.h>
 #include <utilstrencodings.h>