Squish: Don't check state of closed bug

The bug is fixed in master so checking for
it here in 3.5 is wrong and causes fails.

Change-Id: Idd429cf61734c869ada2728151b2bf6f82f6a240
Task-number: QTCREATORBUG-14307
Reviewed-by: Christian Stenger <christian.stenger@theqtcompany.com>