JS backend: removed unused extension function List::equals.

js/js.libraries/src/stdlib/jutilCode.kt

@@ -6,22 +6,6 @@ public inline fun <T> Iterable<T>.toString(): String {
     return makeString(", ", "[", "]")
 }
 
-public inline fun <T> List<T>.equals(that: List<T>): Boolean {
-    val s1 = this.size()
-    val s2 = that.size()
-    if (s1 == s2) {
-        for (i in 0.rangeTo(s1)) {
-            val elem1 = this.get(i)
-            val elem2 = that.get(i)
-            if (elem1 != elem2) {
-                return false
-            }
-        }
-        return true
-    }
-    return false
-}
-
 /** Returns a new ArrayList with a variable number of initial elements */
 public inline fun arrayList<T>(vararg values: T) : ArrayList<T> {
     val list = ArrayList<T>()