Revert "Merge pull request #11354 from Microsoft/map4"

This reverts commit adfdae0dc4, reversing
changes made to aad663cebf.

src/server/scriptInfo.ts

@@ -95,7 +95,7 @@ namespace ts.server {
                 if (!this.formatCodeSettings) {
                     this.formatCodeSettings = getDefaultFormatCodeSettings(this.host);
                 }
-                mergeMapLikes(this.formatCodeSettings, formatSettings);
+                mergeMaps(this.formatCodeSettings, formatSettings);
             }
         }