Clean up things that include script/standard.h

Remove standard.h from files that don't use anything in it, and include
it in files that do.

src/wallet/test/scriptpubkeyman_tests.cpp

@@ -3,8 +3,8 @@
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #include <key.h>
-#include <script/standard.h>
 #include <test/util/setup_common.h>
+#include <script/standard.h>
 #include <wallet/scriptpubkeyman.h>
 #include <wallet/wallet.h>
 #include <wallet/test/util.h>