dumpers: enable backtraces for tests

Change-Id: I80bfb459c20e92fb0ea4e938421015a09f1c8518
Reviewed-by: hjk <hjk121@nokiamail.com>
Debugger: Remove unused code

Change-Id: I139a38c6646c3c19819e2c122d7f8be285eae09e
Reviewed-by: hjk <hjk121@nokiamail.com>