Remove call to non-existing AphrontTypeaheadTemplateView::renderToken()

Summary:
AphrontTypeaheadTemplateView::renderToken() is an undefined method,
and its result is stored in an orphan variable, and no child class
extends AphrontTypeaheadTemplateView defining a renderToken().
Thus remove its call from AphrontTypeaheadTemplateView::render().

Test Plan: Read/grep the code in this class.

Reviewers: O1 Blessed Committers, valerio.bozzolan

Reviewed By: O1 Blessed Committers, valerio.bozzolan

Subscribers: tobiaswiese, valerio.bozzolan, Matthew, Cigaryno

Differential Revision: https://we.phorge.it/D25721