unused files deleted

utils/utils.android.ts

@@ -1,24 +0,0 @@
-export class Collections {
-    public static stringArrayToStringSet(str: string[]): any {
-        var hashSet = new java.util.HashSet();
-        if ("undefined" != typeof str) {
-            for (var element in str) {
-                hashSet.add('' + str[element]);
-            }
-        }
-        return hashSet;
-    }
-
-    public static stringSetToStringArray(stringSet: any): string[] {
-        var arr = [];
-        if ("undefined" != typeof stringSet) {
-            var it = stringSet.iterator();
-            while (it.hasNext()) {
-                var element = '' + it.next();
-                arr.push(element);
-            }
-        }
-
-        return arr;
-    }
-}