Drop volatile from enums template.

Review Request #666 — Created May 24, 2021 and submitted — Latest diff uploaded

Information

pidgin/pidgin
default

Reviewers

This causes some volatile cast warnings with GLib 2.67 and GCC 11.

See, e.g., https://gitlab.gnome.org/GNOME/glib/-/merge_requests/1719

Compiled and saw a bunch less warnings.