useless replace directive in go.mod

[Morty-luo]

It seems that MadAppGang/identifo does not depend on github.com/sfreiberg/gotwilio any more, both directly and indirectly.
So, replace directive left in go.mod makes no sense. Should it be dropped?

replace github.com/sfreiberg/gotwilio => github.com/MadAppGang/gotwilio v0.0.0-20210820024906-f91dd2ebe762

[Dima]

Thanks! Will be removed in #384

[Dima]

Done