simplify movement detection

ArmCtlListener.py

@@ -50,7 +50,7 @@ class ArmCtlListener(ArmControlListener):
 
     # Exit a parse tree produced by ArmControlParser#Wait.
     def exitWait(self, ctx: ArmControlParser.WaitContext):
-        while self.r.isMoving:
+        while self.r.isMoving():
             pass
         if (ctx.number() is not None):
             sleep(ctx.number().value)

robot.py

@@ -43,14 +43,6 @@ class Robot:
             pass
 
     def isMoving(self):
-        if len(self.angle) != len(self.target):
-            values = []
-            for i in range(len(self.angle)):
-                try:
-                    values.append(self.target[i])
-                except Exception as e:
-                    values.append(0)
-            return self.angle != values
         return self.angle != self.target
 
     @staticmethod