The attribution control no longer shows duplicate attribution text. r=crschmidt (closes #2300)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@9731 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Control/Attribution.js

@@ -23,12 +23,6 @@ OpenLayers.Control.Attribution =
      */
     separator: ", ",
     
-    /**
-     * APIProperty: eliminateDuplicates
-     * {Boolean} shall already present attribution strings be eliminated when other layers have the same attribution string?
-     */
-    eliminateDuplicates: false,
-       
     /**
      * Constructor: OpenLayers.Control.Attribution 
      * 
@@ -87,9 +81,9 @@ OpenLayers.Control.Attribution =
             for(var i=0, len=this.map.layers.length; i<len; i++) {
                 var layer = this.map.layers[i];
                 if (layer.attribution && layer.getVisibility()) {
-                    // add attribution if duplicates shall be ignored generally
-                    // or if the current attribution string is unique
-                    if (!this.eliminateDuplicates || OpenLayers.Util.indexOf(attributions, layer.attribution) === -1) {
+                    // add attribution only if attribution text is unique
+                    if (OpenLayers.Util.indexOf(
+                                    attributions, layer.attribution) === -1) {
                         attributions.push( layer.attribution );
                     }
                 }