Remove stubbing of check_authorization in spec
Remove stubbing of check_authorization in spec

check_authorization is part of our SUT (the controller), so we should
not be stubbing it out.

Also removed some unnecessary stubbing of the order.

solidusio/solidus_auth_devise,solidusio/solidus_auth_devise,solidusio/solidus_auth_devise,mayankdedhia/solidus_auth_devise,mayankdedhia/solidus_auth_devise,mayankdedhia/solidus_auth_devise