Build: pengine doesn't care about terminal output nor messaging layer

Discovered by looking at how the linkage looks like after introduction
of "ld --as-needed" (consider only libraries actually satisfying symbol
resolution, commit 5ec2711) for daemons + libraries.

Initially, it was observed that libcfg, libcmap, libcpg, and libquorum
were omitted in the as-needed linkage, but libcorosync_common (currently
containing two functions not used by pacemaker at all) is of no use as
well. Also anything ncurses-related in the context of pengine daemon
is plain wrong (note that it may make sense in the context of
libpengine, though).