--- old/src/hotspot/share/oops/markOop.hpp	2019-05-03 10:53:52.112268688 +0200
+++ new/src/hotspot/share/oops/markOop.hpp	2019-05-03 10:53:51.650252982 +0200
@@ -177,15 +177,6 @@
     assert(has_bias_pattern(), "should not call this otherwise");
     return (JavaThread*) ((intptr_t) (mask_bits(value(), ~(biased_lock_mask_in_place | age_mask_in_place | epoch_mask_in_place))));
   }
-  bool biased_locker_is(JavaThread* thread) const {
-    if (!has_bias_pattern()) {
-      return false;
-    }
-    // If current thread is not the owner it can be unbiased at anytime.
-    JavaThread* jt = (JavaThread*) ((intptr_t) (mask_bits(value(), ~(biased_lock_mask_in_place | age_mask_in_place | epoch_mask_in_place))));
-    return jt == thread;
-  }
-
   // Indicates that the mark has the bias bit set but that it has not
   // yet been biased toward a particular thread
   bool is_biased_anonymously() const {