wxMozilla has been discontinued in favour of wxWebConnect, and I have no interest in maintaining it further. It has one package in the tree using it, dev-util/documancer, which is also under our care and hasn't seen a release since 2005.
# Ryan Hill <dirtyepic@gentoo.org> (16 Feb 2009) # Masked for removal in 30 days, bug #305471. # Abandoned upstream, no releases in years. dev-util/documancer x11-libs/wxmozilla
Removed.