pinner: Replace camera pinning with iorap prefetching

The camera-specific pinning needs to be disabled for iorap to be able to trace the camera
APK.

Saves 40-70MB of memory system-wide depending on the device.

Bug: 149426956
Test: adb shell dumpsys pinner
Change-Id: If98eb82a9d741a41e76565d37cfe2dd828e7a653