libpeas go away

@shaihulud /etc/portage $ emerge -pauDN @world

These are the packages that would be merged, in order:

Calculating dependencies... done!

The following USE changes are necessary to proceed:
 (see "package.use" in the portage(5) man page for more details)
# required by media-video/totem-3.20.1::gnome-kit[python]
# required by gnome-base/gnome-core-apps-3.20.0::gentoo
# required by gnome-base/gnome-3.20-r1::gnome-kit
# required by @selected
# required by @world (argument)
>=dev-libs/libpeas-1.18.0 python_targets_python2_7 python_targets_python3_4

!!! The ebuild selected to satisfy ">=dev-libs/libpeas-1.1.0[python_targets_python2_7(-)?,python_targets_python3_4(-)?,python_targets_python3_5(-)?,python_targets_python3_6(-)?,-python_single_target_jython2_7(-),-python_single_target_pypy(-),-python_single_target_pypy3(-),python_single_target_python2_7(+)?,python_single_target_python3_4(+)?,python_single_target_python3_5(+)?,python_single_target_python3_6(+)?]" has unmet requirements.
- dev-libs/libpeas-1.18.0::gnome-kit USE="gtk python -glade -jit -lua -test" PYTHON_TARGETS="python3_6 -python2_7 -python3_4 -python3_5"

  The following REQUIRED_USE flag constraints are unsatisfied:
    python? ( at-most-one-of ( python_targets_python3_4 python_targets_python3_5 python_targets_python3_6 ) )

  The above constraints are a subset of the following complete expression:
    python? ( any-of ( python_targets_python2_7 python_targets_python3_4 python_targets_python3_5 python_targets_python3_6 ) at-most-one-of ( python_targets_python3_4 python_targets_python3_5 python_targets_python3_6 ) )

(dependency required by "media-video/totem-3.20.1::gnome-kit" [ebuild])
(dependency required by "gnome-base/gnome-core-apps-3.20.0::gentoo" [installed])
(dependency required by "gnome-base/gnome-3.20-r1::gnome-kit" [ebuild])
(dependency required by "@selected" [set])
(dependency required by "@world" [argument])