Remove deprecated and unused legacy ShareConfigModel.areAvatarsEnabled()

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

core/js/shareconfigmodel.js

@@ -33,14 +33,6 @@
 			allowGroupSharing: oc_appconfig.core.allowGroupSharing
 		},
 
-		/**
-		 * @returns {boolean}
-		 * @deprecated here for legacy reasons - will always return true
-		 */
-		areAvatarsEnabled: function() {
-			return true;
-		},
-
 		/**
 		 * @returns {boolean}
 		 */