tree-wide: get rid of old dispatch_verb

Also rename dispatch_verb_with_args to dispatch_verb.

src/bless-boot/bless-boot.c

@@ -580,7 +580,7 @@ static int run(int argc, char *argv[]) {
                 return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
                                        "Marking a boot is only supported on EFI systems.");
 
-        return dispatch_verb_with_args(args, NULL);
+        return dispatch_verb(args, NULL);
 }
 
 DEFINE_MAIN_FUNCTION(run);