COMP: Remove DoubleBufferingOff

On Ubuntu factory build, CamBlur is failing with the X error:
X Error of failed request:  BadMatch (invalid parameter attributes)
  Major opcode of failed request:  73 (X_GetImage)

This patch trie to see if DoubleBufferingOff is the culprit

Change-Id: I1214dfe4e76387eb20213d81fee0cb58ef0fac80
Merge topic 'FailingTest_CamBlur' into master

de282917 COMP: Remove DoubleBufferingOff