Drop PathSource TODO in GitSource
Drop PathSource TODO in GitSource

This effort was started in de6944798cf2940b91c742b8d6cd4294ea28f76a,
and looks (to me) to be resolved at this point.

vojtechkral/cargo,eminence/cargo,rustyhorde/cargo,rustyhorde/cargo,vojtechkral/cargo,nipunn1313/cargo,nipunn1313/cargo,eminence/cargo,tshepang/cargo,tshepang/cargo,tsurai/cargo,rust-lang/cargo,nipunn1313/cargo,rust-lang/cargo,tshepang/cargo,rustyhorde/cargo,tshepang/cargo,eminence/cargo,rust-lang/cargo,vojtechkral/cargo,vojtechkral/cargo,tsurai/cargo,nipunn1313/cargo,eminence/cargo,tsurai/cargo,rustyhorde/cargo,rust-lang/cargo,tsurai/cargo,tsurai/cargo