8285447: StackWalker minimal batch size should be optimized for getCallerClass

Reviewed-by: simonis

test/micro/org/openjdk/bench/java/lang/StackWalkBench.java

@@ -310,16 +310,6 @@ public class StackWalkBench {
         }
     }
 
-    /**
-     * StackWalker.getCallerClass()
-     */
-    @Benchmark
-    public void getCallerClass(Blackhole bh) {
-        final StackWalker sw = walker(walker);
-        Class<?> c = sw.getCallerClass();
-        bh.consume(c);
-    }
-
     /**
      * StackWalker.getCallerClass() with generated call stack of
      * the given depth.