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/interfaces.cpp

@@ -11,7 +11,6 @@
 #include <policy/fees.h>
 #include <primitives/transaction.h>
 #include <rpc/server.h>
-#include <script/standard.h>
 #include <support/allocators/secure.h>
 #include <sync.h>
 #include <uint256.h>