StdLib cleanup: remove unused imports

libraries/stdlib/src/kotlin/collections/AbstractIterator.kt

@@ -2,9 +2,6 @@ package kotlin.support
 
 import java.util.NoSuchElementException
 
-// TODO should not need this - its here for the JS stuff
-import java.lang.UnsupportedOperationException
-
 private enum class State {
     Ready,
     NotReady,

libraries/stdlib/src/kotlin/io/IOStreams.kt

@@ -4,8 +4,6 @@ package kotlin.io
 
 import java.io.*
 import java.nio.charset.Charset
-import java.nio.charset.CharsetDecoder
-import java.nio.charset.CharsetEncoder
 import java.util.NoSuchElementException
 
 /** Returns an [Iterator] of bytes in this input stream. */

libraries/stdlib/src/kotlin/io/files/FilePathComponents.kt

@@ -4,8 +4,6 @@
 package kotlin.io
 
 import java.io.File
-import java.util.Collections
-import java.util.NoSuchElementException
 import kotlin.text.Regex
 
 /**

libraries/stdlib/src/kotlin/io/files/FileTreeWalk.kt

@@ -4,9 +4,7 @@
 package kotlin.io
 
 import java.io.File
-import java.io.FileNotFoundException
 import java.io.IOException
-import java.util.ArrayList
 import java.util.NoSuchElementException
 import java.util.Stack
 

libraries/stdlib/src/kotlin/properties/MapAccessors.kt

@@ -1,9 +1,6 @@
 @file:kotlin.jvm.JvmName("MapAccessorsKt")
 package kotlin.properties
 
-import java.io.Serializable
-import java.util.NoSuchElementException
-
 // extensions for Map and MutableMap
 
 /**

libraries/stdlib/src/kotlin/text/CharCategoryJVM.kt

@@ -1,7 +1,5 @@
 package kotlin
 
-import kotlin.properties.Delegates
-
 /**
  * Represents the character general category in the Unicode specification.
  */

libraries/stdlib/src/kotlin/text/CharDirectionalityJVM.kt

@@ -1,7 +1,5 @@
 package kotlin
 
-import kotlin.properties.Delegates
-
 /**
  * Represents the Unicode directionality of a character.
  * Character directionality is used to calculate the

libraries/stdlib/src/kotlin/text/StringsJVM.kt

@@ -4,11 +4,9 @@
 package kotlin
 
 import java.io.StringReader
-import java.util.regex.MatchResult
 import java.util.regex.Pattern
 import java.nio.charset.Charset
 import java.util.*
-import kotlin.text.Regex
 
 
 /**

libraries/stdlib/src/kotlin/util/JLangJVM.kt

@@ -3,7 +3,6 @@
 package kotlin
 
 import java.lang.reflect.Method
-import kotlin.jvm.internal.unsafe.*
 import kotlin.jvm.internal.Intrinsic
 import kotlin.reflect.KClass
 

libraries/stdlib/test/DataClassTest.kt

@@ -2,7 +2,7 @@ package test.dataclass
 
 import org.junit.Test
 import kotlin.test.*
-import java.io.Serializable
+
 
 /**
  */

libraries/stdlib/test/DefaultIntrinsicObjectsJVMTest.kt

@@ -18,8 +18,6 @@ package test.numbers
 
 import kotlin.test.*
 
-import java.util.*
-import kotlin.test.*
 import org.junit.Test as test
 
 class CompanionObjectsExtensionsTest {

libraries/stdlib/test/ExceptionTest.kt

@@ -2,7 +2,6 @@ package test.collections
 
 import kotlin.test.*
 
-import java.util.*
 import org.junit.Test  as test
 import java.io.PrintWriter
 import java.io.*

libraries/stdlib/test/OldStdlibTest.kt

@@ -3,8 +3,6 @@ package test.collections
 import kotlin.*
 import kotlin.io.*
 import kotlin.test.*
-import java.util.*
-import java.io.*
 import org.junit.Test as test
 
 class OldStdlibTest() {

libraries/stdlib/test/collections/MapJVMTest.kt

@@ -1,8 +1,9 @@
 package test.collections
 
 import java.util.concurrent.ConcurrentHashMap
-import java.util.concurrent.ConcurrentMap
-import kotlin.test.*
+import kotlin.test.assertEquals
+import kotlin.test.assertFails
+import kotlin.test.expect
 import org.junit.Test as test
 
 class MapJVMTest {

libraries/stdlib/test/io/Files.kt

@@ -8,9 +8,7 @@ import java.util.HashSet
 import java.util.ArrayList
 import kotlin.io.walkBottomUp
 import kotlin.io.walkTopDown
-import kotlin.test.assertFalse
-import kotlin.test.assertNull
-import kotlin.test.assertTrue
+import kotlin.test.*
 
 class FilesTest {
 

libraries/stdlib/test/io/IOStreams.kt

@@ -4,7 +4,6 @@ import org.junit.Test as test
 import kotlin.test.*
 import java.io.Writer
 import java.io.BufferedReader
-import java.io.File
 
 class IOStreamsTest {
     @test fun testGetStreamOfFile() {

libraries/stdlib/test/properties/delegation/lazy/LazyValuesTest.kt

@@ -2,8 +2,7 @@ package test.properties.delegation.lazy
 
 import org.junit.Test as test
 import kotlin.properties.*
-import kotlin.test.assertNotNull
-import kotlin.test.assertTrue
+import kotlin.test.*
 
 class LazyValTest {
     var result = 0

libraries/stdlib/test/text/RegexJVMTest.kt

@@ -1,7 +1,6 @@
 package test.text
 
 import kotlin.test.*
-import kotlin.text.*
 import org.junit.Test as test