Remove parenthesis for it_behaves_like calls (#1260)

These were only added once, remove them to keep the code consistent.

Co-authored-by: Herwin <herwinw@users.noreply.github.com>

Author: herwinw

core/enumerable/filter_spec.rb

@@ -3,5 +3,5 @@
 require_relative 'shared/find_all'
 
 describe "Enumerable#filter" do
-  it_behaves_like(:enumerable_find_all, :filter)
+  it_behaves_like :enumerable_find_all, :filter
 end