It was used to disable code/variables referenced in Q_ASSERT_X.
Since the macro is now expanded in release mode as well, this
causes compilation errors.

Change-Id: I5b90515c042f9d3e76be84cd5385eae081a037c8
Reviewed-by: Louai Al-Khanji <louai.al-khanji@theqtcompany.com>