Fix array except! method to modify self

Author: dmgarland

lib/bitbucket_rest_api/core_ext/array.rb

@@ -4,11 +4,8 @@ def except(*keys) # :nodoc:
     self.dup.except!(*keys)
   end unless method_defined?(:except)
 
-  # TODO except! should moodify self not a copy
   def except!(*items) # :nodoc:
-    copy = self.dup
-    copy.reject! { |item| items.include? item }
-    copy
+    self.reject! { |item| items.include? item }
   end unless method_defined?(:except!)
 
   def extract_options!

spec/bitbucket_rest_api/core_ext/array_spec.rb

@@ -13,7 +13,7 @@
   end
 
   describe '#except!' do
-    xit 'removes the keys from the self' do
+    it 'removes the keys from the self' do
       array = [:a, :b, :c, :d]
       array.except!(:a, :b)