diff --git a/check_source.pl b/check_source.pl
index fe403e46..bd998bbf 100644
--- a/check_source.pl
+++ b/check_source.pl
@@ -247,45 +247,4 @@ for my $rpmlint (glob("$dir/*rpmlintrc")) {
     }
 }
 
-exit($ret) if $ret;
-
-# now check if the change is small enough to warrent a review-by-mail
-exit(0) unless -d $old;
-
-sub prepare_package($) {
-
-    my $files = shift;
-
-    unlink glob "*.changes"; # ignore changes
-    unlink glob "*.tar.*"; # we can't diff them anyway
-    unlink glob "*.zip";
-
-    # restore original spec file
-    for my $spec (glob("*.beforeurlstrip")) {
-        my $oldname = $spec;
-        $oldname =~ s/.beforeurlstrip//;
-        rename($spec, $oldname);
-    }
-
-    for my $spec (glob("*.spec")) {
-        open(SPEC, "/usr/lib/obs/service/format_spec_file.files/prepare_spec $spec | grep -v '^#' |");
-        my @lines = <SPEC>;
-        close(SPEC);
-        open(SPEC, ">", $spec);
-        print SPEC join('', @lines);
-        close(SPEC);
-    }
-}
-
-# move it back so we also diff the service file
-if (-f "$dir/_service.bak") {
-    rename("$dir/_service.bak", "$dir/_service") || die "rename failed";
-}
-
-my %files;
-chdir($old);
-prepare_package(\%files);
-chdir($odir2);
-chdir($dir);
-prepare_package(\%files);
-exit(0);
+exit($ret);
diff --git a/check_source.py b/check_source.py
index 978d17e4..33b53caf 100755
--- a/check_source.py
+++ b/check_source.py
@@ -283,8 +283,8 @@ class CheckSource(ReviewBot.ReviewBot):
                 self.review_messages[
                     'declined'] = f"Services are only allowed if their mode is one of {allowed}. Please change the mode of $name and use `osc service localrun/disabledrun`."
                 return False
-            # move it away to have full service from source validator
-            os.rename(servicefile, servicefile + '.bak')
+            # remove it away to have full service from source validator
+            os.unlink(servicefile)
         return True
 
     def source_has_correct_maintainers(self, source_project):