8259317: Remove JVM option BreakAtWarning

Reviewed-by: lfoltan, coleenp

Author: Harold Seigel

src/hotspot/share/runtime/globals.hpp

@@ -554,9 +554,6 @@ const intx ObjectAlignmentInBytes = 8;
           "directory) of the dump file (defaults to java_pid<pid>.hprof "   \
           "in the working directory)")                                      \
                                                                             \
-  develop(bool, BreakAtWarning, false,                                      \
-          "Execute breakpoint upon encountering VM warning")                \
-                                                                            \
   product(ccstr, NativeMemoryTracking, "off",                               \
           "Native memory tracking options")                                 \
                                                                             \

src/hotspot/share/utilities/debug.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2021, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -125,7 +125,6 @@ void warning(const char* format, ...) {
     va_end(ap);
     fputc('\n', err);
   }
-  if (BreakAtWarning) BREAKPOINT;
 }
 
 #ifndef PRODUCT