Revert "Check security context in CA certificate injection"
Since the APIs used for security checking is not merged in mainline-prod.
Revert this change first.
This reverts commit c3239859.
Bug: 167653798
Merged-In: I36b2572ff2580e2f3971b2029619edb5ac36c8dc
Change-Id: I36b2572ff2580e2f3971b2029619edb5ac36c8dc
(cherry picked from commit c442c132)