Remove disambiguationTemplates from wikipedia_family.py

The 'disambiguationTemplates' attribute of Family classes is
only used in the .disambig() method, which is in turn called
only by Page.isDisambig() and only if the Disambiguator extension
isn't available (commit a62b2475323efb5b694ae98444130b13d275de68).
Since the latter is enabled on every Wikimedia site, the hardcoded
list will never be used.

Change-Id: I6979acd9483f72fba005c06c646c3a9caa63686a
Merge "Remove disambiguationTemplates from wikipedia_family.py"