Remove unused code

[jonashaag]

There seems to be a lot of unused code, e.g. in progressbar.py. Related to #76

[lukaszb]

Well, I believe progressbar is used by CLI. Try

vcs summary

[jonashaag]

Yeah but a lot of code in progressbar isn't used at all. And there's more unused code.

[lukaszb]

Removed, @jonashaag, please let me know if that change is actually what you meant. If you would spot any other code fragments that are not used, please let us know too. Thanks!

[jonashaag]

More like this jonashaag@9b03a47

[marcinkuzminski]

baseui_config.py files is also not used anywhere and can be safely removed