Avoid monkey patching string class in tests (breaks some other)

services/table-geocoder/spec/internal-geocoder/query_generator_factory_spec.rb

@@ -3,22 +3,12 @@
 require_relative '../../lib/internal-geocoder/query_generator_factory.rb'
 require_relative '../../lib/internal-geocoder/abstract_query_generator.rb'
 require_relative '../../../../spec/rspec_configuration.rb'
+require          'active_support/core_ext' # Needed for string.blank?
 
 RSpec.configure do |config|
   config.mock_with :mocha
 end
 
-class String
-  # We just need this instead of adding the whole rails thing
-  def squish
-    self.split.join(' ')
-  end
-
-  def blank?
-    !self || empty?
-  end
-end
-
 =begin
 The class should generate queries to be used by the InternalGeocoder depending on the inputs.