No more abitrary format for profile, just predefs

Drop very flexible formatting for profile in favour of
predefined options simple, startend, short and long.

-P can have an argument respecting the following form:

    [[prefix]:[separator]]<fmtopt>

The default argument is equivalent to:

    PROFILE::short

Signed-off-by: Eddy Petrișor <eddy.petrisor@gmail.com>
remove dead code

Signed-off-by: Eddy Petrișor <eddy.petrisor@gmail.com>