sys-libs/glibc: drop devpts mount checks, bug #704780

sys-libs/glibc: drop devpts mount checks, bug #704780

This is the same as b793253be2f42
("sys-libs/glibc: drop devpts mount checks, bug #704780")
applied to stable ebuilds.

Toralf reports that sys-apps/bubblewrap also does not
follow tty group convention when mounts devpts. Let's
drop it from stable ebuilds as well.

Reported-by: Toralf Förster
Reported-by: Kai Krakow
Closes: https://bugs.gentoo.org/704780
Package-Manager: Portage-2.3.99, Repoman-2.3.22
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>