`HTTP_CCACHE` path was introduced in [0], but hasn't been set as
gssproxy's cred_store option(`ccache`) and nowhere is really
used besides the removing of this not existed path. It is safe to
drop all referencies for `HTTP_CCACHE`.
As of 0.8.0[1] gssproxy uses `MEMORY` credentials type for cred_store
as default.
[0]: d2f5fc304f
[1]: 0e1b4a0c84
Signed-off-by: Stanislav Levin <slev@altlinux.org>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>