Remove default thumbnail size setting in portability lib

Settings thumbnail size to (0,0) suppresses thumbnail generation. The
Camera app did not set to (0,0) explicitly, but when porting
Camera.Parameters to CameraSettings this crept in. Causes issue on
Nakasi and no reason to suppress thumbnails in general.

Bug: 17700333
Change-Id: I486e560bc9aaf05daf019a3aad8de78ee306f21b
2 files changed