[MacOS 10.11]uninstall git client

How to uninstall git client in MacOS 10.11?

I installed git client to /usr/bin/git, but I can't uninstall it.

run 'sudo rm /usr/bin/git', NOPE.

disabled 'csrutil' and remove again, NOPE.

Do you have any shell script or some tools to uninstall it?