Docs: Remove py34 substitutions in nightly lists
Docs: Remove py34 substitutions in nightly lists

In addition to previously merged #5839 the substitutions for the no
longer available py34 wheels have to be removed from the lists, too.
LogicalDash/kivy,rnixx/kivy,LogicalDash/kivy,kivy/kivy,kivy/kivy,akshayaurora/kivy,LogicalDash/kivy,matham/kivy,LogicalDash/kivy,matham/kivy,matham/kivy,rnixx/kivy,inclement/kivy,inclement/kivy,akshayaurora/kivy,inclement/kivy,kivy/kivy,akshayaurora/kivy,rnixx/kivy,matham/kivy