You can delete those two directories with TWRP's built-in File Manager (mount System first):
/system/system/priv-app/Contacts
/system/system/priv-app/Mms
You can delete those two directories with TWRP's built-in File Manager (mount System first):
/system/system/priv-app/Contacts
/system/system/priv-app/Mms