KT-1850 Fixed: Redundant imports are not removed when classes are used only by FQ name

OptimizeImportsMultiFileTest added

idea/testData/editor/optimizeImports/Kt1850FullQualified.kt

@@ -0,0 +1,7 @@
+import java
+import java.util
+import java.util.Map
+import java.util.List
+import java.util.Map.Entry
+
+var x : java.util.Map.Entry<java.util.List<String>, String>? = null

idea/testData/editor/optimizeImports/Kt1850FullQualified_after.kt

@@ -0,0 +1 @@
+var x : java.util.Map.Entry<java.util.List<String>, String>? = null

idea/testData/editor/optimizeImports/Kt1850InnerClass.kt

@@ -0,0 +1,7 @@
+import java
+import java.util
+import java.util.Map
+import java.util.List
+import java.util.Map.Entry
+
+var x : Map.Entry<List<String>, String>? = null

idea/testData/editor/optimizeImports/Kt1850InnerClass_after.kt

@@ -0,0 +1,4 @@
+import java.util.List
+import java.util.Map
+
+var x : Map.Entry<List<String>, String>? = null

idea/testData/editor/optimizeImports/PartiallyQualified.kt

@@ -0,0 +1,6 @@
+import java
+import java.util
+import java.util.Map
+import java.util.Map.Entry
+
+var x : util.Map.Entry<util.List<String>, String>? = null

idea/testData/editor/optimizeImports/PartiallyQualified_after.kt

@@ -0,0 +1,3 @@
+import java.util
+
+var x : util.Map.Entry<util.List<String>, String>? = null

idea/testData/editor/optimizeImports/multifile/KotlinPackage/KotlinPackage_after.kt

@@ -0,0 +1,3 @@
+import test1.test2
+
+val s: test2.test3.Class1? = null

idea/testData/editor/optimizeImports/multifile/KotlinPackage/kotlinClass.kt

@@ -0,0 +1,4 @@
+package test1.test2.test3
+
+public class Class1 {
+}

idea/testData/editor/optimizeImports/multifile/KotlinPackage/main.kt

@@ -0,0 +1,6 @@
+import test1
+import test1.test2
+import test1.test2.test3
+import test1.test2.test3.Class1
+
+val s: test2.test3.Class1? = null