Remove side-by-side settings check
Remove side-by-side settings check

All settings opened that way have the correct syntax set anyway.
You can, however, also use the `edit_settings` command to open
non-settings file side by side, which leads to error message from
SettingListener.__init__.

SublimeText/AAAPackageDev,SublimeText/PackageDev,SublimeText/AAAPackageDev