KT-1931 Duplicate class from Kotlin runtime in completion

#KT-1931 Fixed

idea/testData/completion/basic/NoClassNameDuplicationForRuntimeClass.kt

@@ -0,0 +1,6 @@
+val x = LineIterator<caret>
+
+// RUNTIME: 1
+// TIME: 1
+// EXIST: LineIterator
+// NUMBER: 1

idea/testData/completion/handlers/DoNotInsertImportForAlreadyImported.kt

@@ -1,5 +1,5 @@
 // KT-2424 Invoking completion adds unnecessary FQ name
 
 fun main(args: Array<String>) {
-    throw IllegalAccessExceptio<caret>() //Press Ctrl+Space and select it
+    throw IllegalAccessExceptio<caret> //Press Ctrl+Space and select it
 }

idea/testData/completion/handlers/DoNotInsertImportForAlreadyImported.kt.after

@@ -1,5 +1,5 @@
 // KT-2424 Invoking completion adds unnecessary FQ name
 
 fun main(args: Array<String>) {
-    throw IllegalAccessException<caret>() //Press Ctrl+Space and select it
+    throw IllegalAccessException<caret> //Press Ctrl+Space and select it
 }

idea/testData/completion/handlers/InsertFqnForJavaClass.kt

@@ -0,0 +1,5 @@
+class SortedSet
+
+fun test() {
+  val a = SortedSet<caret>
+}

idea/testData/completion/handlers/InsertFqnForJavaClass.kt.after

@@ -0,0 +1,5 @@
+class SortedSet
+
+fun test() {
+  val a = java.util.SortedSet
+}