stack.cabal: remove the redundant build-dependency on email-validate
stack.cabal: remove the redundant build-dependency on email-validate

harendra-kumar/stack,luigy/stack,luigy/stack,AndreasPK/stack,juhp/stack,Fuuzetsu/stack,MichielDerhaeg/stack,anton-dessiatov/stack,deech/stack,AndreasPK/stack,anton-dessiatov/stack,Blaisorblade/stack,mrkkrp/stack,Heather/stack,MichielDerhaeg/stack,achernyak/stack,narrative/stack,sjakobi/stack,narrative/stack,Blaisorblade/stack,AndrewRademacher/stack,juhp/stack,mrkkrp/stack,harendra-kumar/stack,deech/stack,phadej/stack,phadej/stack,AndrewRademacher/stack,Fuuzetsu/stack,achernyak/stack,sjakobi/stack,martin-kolinek/stack,martin-kolinek/stack,Heather/stack