Revert "[FIX] Enabling logic of ProjectOptionComposite was fragile"

This logic is not fragile ! The issues with the STF are caused due a bug in the SWT Bot API. 

This reverts commit b569c38478d57a25b318640859bd8088989d31f2.

Change-Id: I86efbd987b805d369dab875036ddaa1d32cffe4f
Reviewed-on: http://saros-build.imp.fu-berlin.de/gerrit/1528
Tested-by: Jenkins CI
Reviewed-by: Stefan Rossbach <srossbach@arcor.de>