--- old/make/conf/jib-profiles.js	2018-11-29 13:30:58.745621105 +0100
+++ new/make/conf/jib-profiles.js	2018-11-29 13:30:58.407606599 +0100
@@ -688,14 +688,6 @@
                        profiles[openName].artifacts["jdk"].remote));
     });
 
-    // Enable ZGC in linux-x64-open builds
-    [ "linux-x64-open" ].forEach(function (name) {
-        var configureArgs = { configure_args: [ "--with-jvm-features=zgc" ] };
-        var debugName = name + common.debug_suffix;
-        profiles[name] = concatObjects(profiles[name], configureArgs);
-        profiles[debugName] = concatObjects(profiles[debugName], configureArgs);
-    });
-
     // Generate cmp-baseline profiles for each main profile and their
     // corresponding debug profile. This profile does a compare build run with no
     // changes to verify that the compare script has a clean baseline