diff --git a/js/js.translator/testData/stdlib/cases/Filter.kt b/js/js.translator/testData/stdlib/cases/Filter.kt
deleted file mode 100644
index d041e8447d8..00000000000
--- a/js/js.translator/testData/stdlib/cases/Filter.kt
+++ /dev/null
@@ -1,60 +0,0 @@
-package kotlin
-
-import java.util.*
-import java.lang.Iterable // WTF?
-
-/*
-Filters given iterator
-*/
-fun <T> java.util.Iterator<T>.filter(f: (T) -> Boolean): java.util.Iterator<T> = FilterIterator<T>(this, f)
-
-/*
-Adds filtered elements in to given container
-*/
-fun <T, U : Collection<in T>> java.lang.Iterable<T>.filterTo(var container: U, filter: (T) -> Boolean): U {
-    for (element in this) {
-        if (filter(element))
-            container.add(element)
-    }
-    return container
-}
-
-/*
-Create iterator filtering given java.lang.Iterable
-*/
-/*
-fun <T> java.lang.Iterable<T>.filter(f: (T)->Boolean) : java.util.Iterator<T> = (iterator() as java.util.Iterator<T>).filter(f)
-*/
-
-private class FilterIterator<T>(val original: java.util.Iterator<T>, val filter: (T) -> Boolean) : java.util.Iterator<T> {
-    var state = 0
-    var nextElement: T? = null
-
-    override fun hasNext(): Boolean =
-            when(state) {
-                1 -> true  // checked and next present
-                2 -> false // checked and next not present
-                else -> {
-                    while (original.hasNext()) {
-                        val candidate = original.next()
-                        if ((filter)(candidate)) {
-                            nextElement = candidate
-                            state = 1
-                            true
-                        }
-                    }
-                    state = 2
-                    false
-                }
-            }
-
-    override fun next(): T =
-            if (state != 1)
-                throw java.util.NoSuchElementException()
-            else {
-                val res = nextElement as T
-                nextElement = null
-                state = 0
-                res
-            }
-}