blessed-builds: Drop return code that doesn't exist

Return code 128 got dropped when we fixed tag verification.

Fixes: f2b50474

blessed_build_auto.groovy

@@ -166,11 +166,7 @@ pkgs.each { pkg ->
 
 			    currentBuild.result = 'SUCCESS'
                             if(result != 0) {
-                                if(result == 128) {
-                                    currentBuild.result = 'NOT_BUILT'
-                                    print "No tag on HEAD was found or tag was not signed. Aborting build."
-                                    throw "not built"
-                                } else if (result == 64) {
+                                if (result == 64) {
                                     currentBuild.result = 'NOT_BUILT'
                                     print "Tag verification failed!"
                                     throw "not built"