Fix deprecated function calls without parens

[janpieper]

I found some more warnings regarding function calls without (), similar to #33.

warning: using map.field notation (without parentheses) to invoke function MyApp.History.__info__() is deprecated, you must add parentheses instead: remote.function()
  (memento 0.3.2) lib/memento/query/query.ex:279: Memento.Query.all/2
  (elixir 1.17.1) src/elixir.erl:386: :elixir.eval_external_handler/3
  (mnesia 4.23.1) mnesia_tm.erl:889: :mnesia_tm.apply_fun/3
  (mnesia 4.23.1) mnesia_tm.erl:865: :mnesia_tm.execute_transaction/5
  (memento 0.3.2) lib/memento/transaction.ex:71: Memento.Transaction.execute/2

[sheharyarn]

Thank you!