Remove duplicate __gss_krb5_mechanism_oid_desc definition
Remove duplicate __gss_krb5_mechanism_oid_desc definition

__gss_krb5_mechanism_oid_desc is now defined in gssapi/gssapi_oid.h,
so remove the definition in gssapi/gssapi_krb5.h in favor of including
that header.

Signed-off-by: Love Hörnquist Åstrand <c5e2f0824a6b8bf7ea1d693b4c00a7e90e09ef7a@h5l.org>

madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal