Drop unsupported --no-jetifier from Android cmd

The `--no-jetifier` option no longer appears to be supported and results in an error when attempting to build the Android demo app.

Ref: wordpress-mobile/gutenberg-mobile#5881 (comment)

packages/react-native-editor/package.json

@@ -94,7 +94,7 @@
 		"i18n:extract-used-strings": "node bin/extract-used-strings",
 		"i18n:fetch-translations": "node bin/i18n-translations-download",
 		"postinstall": "npm run i18n-cache",
-		"android": "react-native run-android --no-packager --no-jetifier",
+		"android": "react-native run-android --no-packager",
 		"prewpandroid": "rm -Rf $TMPDIR/gbmobile-wpandroidfakernroot && mkdir $TMPDIR/gbmobile-wpandroidfakernroot && ln -s $(cd \"$(dirname \"../../../../../\")\"; pwd) $TMPDIR/gbmobile-wpandroidfakernroot/android",
 		"wpandroid": "npm run android -- --root $TMPDIR/gbmobile-wpandroidfakernroot --variant wasabiDebug --appIdSuffix beta --appFolder WordPress --main-activity=ui.WPLaunchActivity",
 		"preios": "cd ios && (bundle check > /dev/null || bundle install) && bundle exec pod install --repo-update",