Remove unneeded default imports in stdlib and tests

libraries/stdlib/js/src/generated/_ArraysJs.kt

@@ -13,9 +13,6 @@ package kotlin.collections
 import kotlin.js.*
 import primitiveArrayConcat
 import withType
-import kotlin.*
-import kotlin.text.*
-import kotlin.comparisons.*
 
 /**
  * Returns a [List] that wraps the original array.

libraries/stdlib/js/src/generated/_CollectionsJs.kt

@@ -11,9 +11,6 @@ package kotlin.collections
 //
 
 import kotlin.js.*
-import kotlin.*
-import kotlin.text.*
-import kotlin.comparisons.*
 
 /**
  * Reverses elements in the list in-place.

libraries/stdlib/js/src/generated/_ComparisonsJs.kt

@@ -11,9 +11,6 @@ package kotlin.comparisons
 //
 
 import kotlin.js.*
-import kotlin.*
-import kotlin.text.*
-import kotlin.comparisons.*
 
 /**
  * Returns the greater of two values.

libraries/stdlib/js/src/kotlin/dom/Dom.kt

@@ -2,11 +2,10 @@
  * 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.dom
 
 import org.w3c.dom.*
-import kotlin.collections.*
-
 
 /**
  * Gets a value indicating whether this node is a TEXT_NODE or a CDATA_SECTION_NODE.
@@ -14,7 +13,6 @@ import kotlin.collections.*
 public val Node.isText: Boolean
     get() = nodeType == Node.TEXT_NODE || nodeType == Node.CDATA_SECTION_NODE
 
-
 /**
  * Gets a value indicating whether this node is an [Element].
  */