remove debug output

src/main/grammar/Aspect.flex

@@ -21,13 +21,11 @@ import com.intellij.psi.TokenType;
   private java.util.Stack<Integer> modeStack = new java.util.Stack<>();
 
   private void enterState(int state) {
-    System.out.println("in state" + yystate() + ", entering state " + state);
     modeStack.push(yystate());
     yybegin(state);
   }
 
   private void exitState() {
-    System.out.println("in state" + yystate() + ", exiting to state " + modeStack.peek());
     yybegin(modeStack.pop());
   }
 %}