Avoid re-defining Result methods.

lib/geocoder/results/freegeoip.rb

@@ -24,8 +24,7 @@ module Geocoder::Result
     end
 
     def self.response_attributes
-      %w[city region_code region_name metrocode
-        zipcode country_name country_code ip]
+      %w[region_code region_name metrocode zipcode country_name ip]
     end
 
     response_attributes.each do |a|

lib/geocoder/results/geocoder_ca.rb

@@ -45,7 +45,7 @@ module Geocoder::Result
 
     def self.response_attributes
       %w[latt longt inlatt inlongt betweenRoad1 betweenRoad2 distance
-        stnumber staddress city prov postal
+        stnumber staddress prov postal
         NearRoad NearRoadDistance intersection major_intersection]
     end
 

lib/geocoder/results/yahoo.rb

@@ -26,7 +26,7 @@ module Geocoder::Result
     def self.response_attributes
       %w[quality offsetlat offsetlon radius boundingbox name
         line1 line2 line3 line4 cross house street xstreet unittype unit postal
-        neighborhood city county state country countrycode statecode countycode
+        neighborhood county state countrycode statecode countycode
         level0 level1 level2 level3 level4 level0code level1code level2code
         timezone areacode uzip hash woeid woetype]
     end