Remove orientation restriction from Camera2SurfaceViewActivity

We need this change because some devices are setup in portrait mode to test.

Test: run stress tests testVideoSnapshot and testTakePicture
Bug: 269054609
Bug: 269054476
Bug: 269052637
Bug: 269053061

Change-Id: Ia3d5bf805c5926aabfcb6f8b94066b58acabf1c6
Merged-In: Ia3d5bf805c5926aabfcb6f8b94066b58acabf1c6