Revert doc patch committed to the wrong branch: "Issue 2690:  Doc fixup.  xrange() objects are slicable."
Revert doc patch committed to the wrong branch: "Issue 2690:  Doc fixup.  xrange() objects are slicable."

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator