clean code

core/src/main/java/com/taobao/arthas/core/GlobalOptions.java

@@ -81,16 +81,6 @@ public class GlobalOptions {
     )
     public static volatile boolean isSupportDefaultMethod = true && JavaVersionUtils.isGreaterThanJava7();
 
-    /**
-     * 是否在asm中输出
-     */
-    @Option(level = 1,
-            name = "debug-for-asm",
-            summary = "Option to print DEBUG message if ASM is involved",
-            description = "This option enables to print DEBUG message of ASM for each method invocation."
-    )
-    public static volatile boolean isDebugForAsm = false;
-
     /**
      * 是否日志中保存命令执行结果
      */