Optimize Imports should remove unused import alias

#KT-17375 Fixed

idea/testData/editor/optimizeImports/common/ConflictWithAlias.kt

@@ -1,4 +1,5 @@
 import name
 import name as names
 
-val a = name
+val a = name
+val b = names

idea/testData/editor/optimizeImports/common/ConflictWithAlias.kt.after

@@ -2,3 +2,4 @@ import name
 import name as names
 
 val a = name
+val b = names

idea/testData/editor/optimizeImports/common/IteratorFunction.dependency.kt

@@ -1,9 +1,8 @@
 package test1
 
-public class MyClass {
-}
+class MyClass
 
-public fun MyClass.iterator(): Iterator<MyClass> {
+operator fun MyClass.iterator(): Iterator<MyClass> {
      return object: Iterator<MyClass> {
          override fun next(): MyClass {
              throw Exception()

idea/testData/editor/optimizeImports/common/TwoConstructors.kt.after

@@ -1,5 +1,5 @@
 // NAME_COUNT_TO_USE_STAR_IMPORT: 2
-import p1.*
+import p1.A
 import p2.A
 
 fun f() {

idea/testData/editor/optimizeImports/common/TwoConstructors.kt.log

@@ -6,4 +6,3 @@ Additional checking of reference KtSimpleNameReference: A
 Changed resolve of KtSimpleNameReference: A
 Additional checking of reference KtInvokeFunctionReference: A("")
 Additional checking of reference KtInvokeFunctionReference: A(1)
-Trying to build import list again with import rules: +p2.A, +p1.*

idea/testData/editor/optimizeImports/jvm/AlreadyOptimized.kt

@@ -1,20 +1,20 @@
 /**
 Comment 1
-*/
+ */
 package sometest
 
-import java.io as JavaIO
-import java.text.Annotation as TextAnnotation
+import java.io.File as JavaFile
+import java.lang.Runnable as Task
 import java.util.ArrayList
 import java.util.HashSet
 
 /**
 Comment 2
-*/
+ */
 class Action {
-    fun test(hash : HashSet<Int>) {
-        val some : TextAnnotation? = null
-        val test : ArrayList<Int>? = null
-        JavaIO.File(StringBuilder().append("Hello").toString())
+    fun test(hash: HashSet<Int>) {
+        val some: Task? = null
+        val test: ArrayList<Int>? = null
+        JavaFile(StringBuilder().append("Hello").toString())
     }
 }

idea/testData/editor/optimizeImports/jvm/AlreadyOptimized.kt.after

@@ -1,20 +1,20 @@
 /**
 Comment 1
-*/
+ */
 package sometest
 
 import java.util.ArrayList
 import java.util.HashSet
-import java.io as JavaIO
-import java.text.Annotation as TextAnnotation
+import java.io.File as JavaFile
+import java.lang.Runnable as Task
 
 /**
 Comment 2
-*/
+ */
 class Action {
-    fun test(hash : HashSet<Int>) {
-        val some : TextAnnotation? = null
-        val test : ArrayList<Int>? = null
-        JavaIO.File(StringBuilder().append("Hello").toString())
+    fun test(hash: HashSet<Int>) {
+        val some: Task? = null
+        val test: ArrayList<Int>? = null
+        JavaFile(StringBuilder().append("Hello").toString())
     }
 }

idea/testData/editor/optimizeImports/jvm/AlreadyOptimized.kt.log

@@ -0,0 +1,4 @@
+Additional checking of reference Getter: JavaFile
+Additional checking of reference KtSimpleNameReference: JavaFile
+Changed resolve of KtSimpleNameReference: JavaFile
+Additional checking of reference KtInvokeFunctionReference: JavaFile(StringBuilder().append("Hello").toString())

idea/testData/editor/optimizeImports/jvm/WithAliases.kt.after

@@ -1,6 +1,4 @@
 import java.util.ArrayList
-import java.io as JavaIO
-import java.util.ArrayList as SomeThing
 
 class Action {
     fun test() {