[JS IR BE]: make deleteProperty non-inline due to new inliner limitations

libraries/stdlib/js/irRuntime/collectionsHacks.kt

@@ -0,0 +1,13 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+package kotlin.collections
+
+// Copied from libraries/stdlib/js/src/kotlin/collections/utils.kt
+// Current inliner doesn't rename symbols inside `js` fun
+@Suppress("UNUSED_PARAMETER")
+internal fun deleteProperty(obj: Any, property: Any) {
+    js("delete obj[property]")
+}