Stop pretending it has anything to do with time, it's zero, and it's not
being read anywhere, we're passing the parameter only because
setClientMessageEvent needs one. We should switch to
setClientMessageEvent' and pass no data, but that would move the X11
dependency lower bound.
Starting with 5240116f3c we only support
GHC versions 8.4.4 and up (more precisely, the GHC version associated
with stackage lts-12 and up). The imports in question are now in
Prelude and need not be imported explicitly.