Say “Bye-Bye to GNU Arch!”
If you used GNU Arch some time and then decided to move to Subversion, for example, this tip for you. To delete all files and directories related with Arch run a following command in the your project tree:
find . \( -name “{arch}” -o -name “.arch-ids” -o -name “.arch-inventory” \) -print0 | xargs -0 rm -rf
After that it’ll be like new one 
Categories: Digital Life
And all your development history is lost…
If it isn’t needed why not