Updated mediawiki/extensions
Project: mediawiki/extensions/Parsoid  e68afd0bfbc61717c60d5d046a009dda53dd3678

Nuke InternalTk

InternalTk is no longer used for extension handling, so its definition and
related handling code can be removed.

Change-Id: I89c38cd7551e7994438e1526ad64c08d67620311