Cleanup: Remove tracking of existing .class files

[g-back]

the bin/com folder is already in the gitignore, but there are some .class files that are still tracked. this removes the tracking of the existing .class files - it'll delete them in this repo, but not locally.

[fidley]

I need to manually solve the conflicts. I'll try to do it through the weekend ;)

[g-back]

should be resolved now

[fidley]

thanks!