don't require faraday/utils; faraday already includes it

lib/google/api_client.rb

@@ -14,7 +14,6 @@
 
 
 require 'faraday'
-require 'faraday/utils'
 require 'multi_json'
 require 'compat/multi_json'
 require 'stringio'

lib/google/api_client/request.rb

@@ -13,7 +13,6 @@
 # limitations under the License.
 
 require 'faraday'
-require 'faraday/utils'
 require 'faraday/request/multipart'
 require 'multi_json'
 require 'compat/multi_json'