Fix comment behavior in remove unused named bindings

tests/cases/fourslash/unusedImports14FS.ts

@@ -0,0 +1,12 @@
+/// <reference path='fourslash.ts' />
+
+// @noUnusedLocals: true
+// @Filename: file2.ts
+//// [| import /* 1 */ A /* 2 */, /* 3 */ { x } from './a'; |]
+//// console.log(A);
+
+// @Filename: file1.ts
+//// export default 10;
+//// export var x = 10;
+
+verify.rangeAfterCodeFix("import /* 1 */ A /* 2 */ from './a';");