Remove unused and unlinked qdocconf file from the project.

Change-Id: I2d0b60c47d92ba82e04a0d90877bda6b287f5a85
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
Merge remote-tracking branch 'origin/stable' into dev

Change-Id: I6a7d0055183a4bf7f850667d11a7dd0f477f4aa9