Revert "Patch itertools to fix the build on 1.45.0"
Revert "Patch itertools to fix the build on 1.45.0"

This reverts commit a147af4cee2282b1dc793b7cecbcc7043d73b11e.

It's no longer needed now that itertools-1.15.0 is released.

asomers/mockall,asomers/mockall