Remove redundant code.

Signed-off-by: crynobone <crynobone@gmail.com>
Release v2.1.3

Signed-off-by: crynobone <crynobone@gmail.com>
Allow custom auth driver to resolve `Orchestra\Auth\Guard`.

Signed-off-by: crynobone <crynobone@gmail.com>
Rename `Orchestra\Auth\Acl\Environment` to `Orchestra\Auth\Acl\Factory`.

Signed-off-by: crynobone <crynobone@gmail.com>
Merge branch '2.1'