Remove the experimental perf jit support until the license is clarified.

src/log-utils.h

Index: src/log-utils.h
diff --git a/src/log-utils.h b/src/log-utils.h
index 3856f6062f6f755f5b826850bcdc6771d05f5fc2..afc3521c6030db63f3175073a0bc34f1b44a7a45 100644
--- a/src/log-utils.h
+++ b/src/log-utils.h
@@ -24,7 +24,7 @@ class Log {
   static bool InitLogAtStart() {
     return FLAG_log || FLAG_log_api || FLAG_log_code || FLAG_log_gc ||
            FLAG_log_handles || FLAG_log_suspect || FLAG_log_regexp ||
-           FLAG_ll_prof || FLAG_perf_basic_prof || FLAG_perf_jit_prof ||
+           FLAG_ll_prof || FLAG_perf_basic_prof ||
            FLAG_log_internal_timer_events || FLAG_prof_cpp;
   }