Removed a duplicate attribute that iPad and Linux Chrome objected to in "strict" mode.

Author: BruceSherwood

lib/glow/primitives.js

@@ -1053,10 +1053,6 @@
         	get: function() { return this.canvas },
         	set: function(value) { throw new Error('Cannot change display of existing object')}
         },
-        display: {
-        	get: function() { return this.canvas },
-        	set: function(value) { throw new Error('Cannot change display of existing object')}
-        },
         __no_autoscale: false,
         __get_extent: function (ext) {
         	if (this.__no_autoscale) return