xfce-base/xfce4-meta: Drop ~x86-fbsd due to bug #665088

xfce-base/xfce4-meta: Drop ~x86-fbsd due to bug #665088

Judicious dropping of keywords due to inactivity in bug #665088
This percolates due to keyword inconsistencies in:
  dev-perl/Log-Agent, dev-perl/glib-perl, xfce-base/xfce4-appfinder
  xfce-base/xfce4-panel, xfce-base/xfce4-session
  xfce-base/xfce4-settings, xfce-base/xfconf, xfce-base/xfdesktop
  xfce-base/xfwm4

Bug: https://bugs.gentoo.org/665088
Package-Manager: Portage-2.3.66, Repoman-2.3.16
RepoMan-Options: --include-arches="x86-fbsd"
Signed-off-by: Kent Fredric <kentnl@gentoo.org>