Before Jetpack had the Pinterest option, I used this plugin:
After updating to Jetpack 1.6.1, I deleted Pin It from the admin side.
I have the Jetpack Share options on my post pages. Example here:
The Pin It button is still there. The Jetpack share section has not updated. I also tried rearranging the options, and it stays the same. Also tried deleting Jetpack from the FTP side, and reinstalling Jetpack. Pin It plugin is not showing on the FTP in the plugins folder.