MFH: r365528

• Remove unneeded LIB_DEPENDS for avahi. padevchooser does not link directly to avahi. Pulseaudio links directly to it and already depends on it. Pkg only considers library dependencies for DT_NEEDED links. Because avahi is not actually needed it is not registered as a dependency in the package. This causes poudriere to rebuild this port on every build because it sees avahi in LIB_DEPENDS but not registered in the package. ldd(1) shows the indirect dependency on avahi, however the direct deps can be seen with ldd -a or readelf -d.

With hat: portmgr