Revert "Added InputFileParameter and OutputFileParameter classes."

[Tarrasch]

Reverts #1801

[mention-bot]

@Tarrasch, thanks for your PR! By analyzing the annotation information on this pull request, we identified @brcopeland, @mikekap and @dlstadther to be potential reviewers

[brcopeland]

I suppose these could be problematic for systems that don't have access to the same files. Personally though I have found them helpful to reduce frequent boilerplate code. Anything occur to you to make it safer, or is something like this just not something you think should be a standard feature?

[Tarrasch]

I revert for now. But I'm still as open as over to merging an improved version of this. In addition to my comments in #1801, I think we need to introduce some mechanism in addition to Parameter.parse(), something like Parameter.parse_from_command_line. The idea is that it has a default implementation to just call out to parse. Meanwhile parse may only perform pure logic prase_from_command_line could do all kinds of conveniences for the user, in this case, it could convert a relative path to an absolute path.

Technically, this call to parse should be call parse_from_command_line instead.

As a practical advice to I would first focus on getting your other two less controversial Parameter-related patches merged first and then continue on this. :)