fix: remove rxjs from _formatCodeOnTypeInTextEditor

Author: aminya

package.json

@@ -62,9 +62,7 @@
   "dependencies": {
     "@atom-ide-community/nuclide-commons": "^0.8.3",
     "@atom-ide-community/nuclide-commons-atom": "^0.8.3",
-    "log4js": "1.1.1",
-    "nullthrows": "1.0.0",
-    "rxjs-compat": "6.3.3"
+    "log4js": "1.1.1"
   },
   "devDependencies": {
     "@artemv/wait-until-promise": "^1.1.2",