Optimize Imports shouldn't delete imports with unresolved parts

#KT-10512 Fixed

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

@@ -1,5 +1,5 @@
 import Outer.Nested
-import Outer.ClassObjectNested
+import Outer.Companion.ClassObjectNested
 import Outer.C.Inner
 import Outer.C.Inner2
 

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

@@ -4,8 +4,6 @@ import pack1.foo
 import pack1.u1
 import pack1.u2
 import pack1.u3
-import pack1.u4
-import pack1.u5
 import pack2.*
 
 fun f() {

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

@@ -4,21 +4,15 @@ import java.lang.StringBuilder
 import java.net.HttpRetryException
 import java.util.ArrayList
 import java.util.HashMap
-import kotlin.test.asserter
 import kotlin.test.Asserter
-import kotlin.Charsets
-import kotlin.Assertions
+import kotlin.text.Charsets
 import kotlin.system.measureTimeMillis
 
 class Action {
     fun test() {
         val chs = Charsets.UTF8
-        // val traait : Asserter = asserter
         val traait : Asserter? = null
-        val objectImport : Assertions? = null
-        measureTimeMillis({ println(HashMap<String, Int>().size()) })
+        measureTimeMillis({ println(HashMap<String, Int>().size) })
         val test : ArrayList<Int>? = null
     }
-}
-
-// RUNTIME
+}

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

@@ -1,16 +1,13 @@
 import java.util.ArrayList
 import java.util.HashMap
 import kotlin.system.measureTimeMillis
+import kotlin.test.Asserter
 
 class Action {
     fun test() {
         val chs = Charsets.UTF8
-        // val traait : Asserter = asserter
         val traait : Asserter? = null
-        val objectImport : Assertions? = null
-        measureTimeMillis({ println(HashMap<String, Int>().size()) })
+        measureTimeMillis({ println(HashMap<String, Int>().size) })
         val test : ArrayList<Int>? = null
     }
-}
-
-// RUNTIME
+}

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

@@ -0,0 +1,2 @@
+Additional checking of reference Getter: Charsets
+Additional checking of reference KtSimpleNameReference: Charsets

idea/testData/editor/optimizeImports/jvm/UnusedImportsInScript.kts

@@ -1,10 +1,9 @@
 import com.sun.corba.se.impl.util.JDKBridge
-import com.sun.org.apache.xpath.internal.operations.And
+import kotlin.collections.filter
 import java.lang.StringBuilder
 import java.net.HttpRetryException
 import java.util.ArrayList
 import java.util.HashMap
-import kotlin.test.asserter
 import kotlin.test.Asserter
 import kotlin.Charsets
 import kotlin.Assertions
@@ -13,12 +12,9 @@ import kotlin.system.measureTimeMillis
 class Action {
     fun test() {
         val chs = Charsets.UTF8
-        // val traait : Asserter = asserter
         val traait : Asserter? = null
         val objectImport : Assertions? = null
-        measureTimeMillis({ println(HashMap<String, Int>().size()) })
+        measureTimeMillis({ println(HashMap<String, Int>().size) })
         val test : ArrayList<Int>? = null
     }
 }
-
-// RUNTIME

idea/testData/editor/optimizeImports/jvm/UnusedImportsInScript.kts.after

@@ -5,12 +5,9 @@ import kotlin.system.measureTimeMillis
 class Action {
     fun test() {
         val chs = Charsets.UTF8
-        // val traait : Asserter = asserter
         val traait : Asserter? = null
         val objectImport : Assertions? = null
-        measureTimeMillis({ println(HashMap<String, Int>().size()) })
+        measureTimeMillis({ println(HashMap<String, Int>().size) })
         val test : ArrayList<Int>? = null
     }
 }
-
-// RUNTIME