Debugger: Remove special column resizing in the break view

Is handled by the general case now.

Change-Id: I3668693cc17bd5db6bb45756d38627c4bb6859e0
Reviewed-by: hjk <hjk121@nokiamail.com>
Debugger: Hide some dock widget access

Change-Id: I6cd12a0a7a04f4d37165828552c08263537cfdbb
Reviewed-by: hjk <hjk121@nokiamail.com>