Camera2: Legacy: Do not remap EACCES error code to PERMISSION_DENIED

This remap causes non-Legacy and Legacy devices to have different
error behavior when the camera permission is removed from a pre-M
application.

Without the remap, both routes map to CameraAccessException with
code CAMERA_DISABLED.

Bug: 21604925
Change-Id: I4ab18dca961cc7cedaccba0531253c9c4ef1d60e