Debugger: Adjust a few autotests to work with LLDB

LLDB doesn't find const[] in the function, since this
is not what the tests are supposed to check, dropping
the const is simpler than using backend specific checks.

Change-Id: Ifad1a57a3112b7cc5e86865e0035bab35cf5523d
Reviewed-by: Christian Stenger <christian.stenger@digia.com>