--- a/src/hotspot/cpu/x86/globals_x86.hpp	Wed Nov 13 11:21:15 2019 +0100
+++ b/src/hotspot/cpu/x86/globals_x86.hpp	Wed Nov 13 11:37:29 2019 +0100
@@ -81,9 +81,6 @@
 define_pd_global(bool, RewriteBytecodes,     true);
 define_pd_global(bool, RewriteFrequentPairs, true);
 
-// GC Ergo Flags
-define_pd_global(size_t, CMSYoungGenPerWorker, 64*M);  // default max size of CMS young gen, per GC worker thread
-
 define_pd_global(uintx, TypeProfileLevel, 111);
 
 define_pd_global(bool, CompactStrings, true);