Remove "pending" from passing tests

spec/mongoid/adapters/mongoid/base_spec.rb

@@ -274,8 +274,6 @@ module Ransack
         end
 
         describe '#ransackable_associations' do
-          before { pending "not implemented for mongoid" }
-
           subject { Person.ransackable_associations }
 
           it { should include 'parent' }

spec/mongoid/search_spec.rb

@@ -433,7 +433,6 @@ module Ransack
       end
 
       context 'with joins' do
-        before { pending 'not implemented for mongoid' }
         it 'allows chaining to access nested conditions' do
           @s.groupings = [
             { :m => 'or', :name_eq => 'Ernie', :children_name_eq => 'Ernie' }