remove the coordinate mixin.

src/ol/mixins/coordinate.js

@@ -1,31 +0,0 @@
-goog.provide('ol.mixins.coordinate');
-goog.require('goog.object');
-
-goog.object.extend(ol.mixins.coordinate, {
-    
-    getX : function() {
-        return this.x_;
-    },
-    
-    getY : function() {
-        return this.y_;
-    },
-    
-    getZ : function() {
-        return this.z_;
-    },
-    
-    setX : function(x) {
-        this.x_ = x;
-        return this;
-    },
-    
-    setY : function(y) {
-        this.y_ = y;
-        return this;
-    },
-    setZ: function(z) {
-        this.z_ = z;
-        return this;
-    }
-});