Better leg sprite support

core/src/mindustry/entities/Leg.java

@@ -3,6 +3,5 @@ package mindustry.entities;
 import arc.math.geom.*;
 
 public class Leg{
-    public final Vec2 joint = new Vec2(), base = new Vec2(), target = new Vec2();
-    public boolean moving = false;
+    public final Vec2 joint = new Vec2(), base = new Vec2();
 }