[AggregateTarget] Remove unused #scoped_configuration_build_dir

lib/cocoapods/target/aggregate_target.rb

@@ -205,13 +205,6 @@ module Pod
       "${SRCROOT}/#{relative_to_srcroot(embed_frameworks_script_path)}"
     end
 
-    # @return [String] The scoped configuration build dir, relevant if the
-    #         target is integrated as framework.
-    #
-    def scoped_configuration_build_dir
-      "$(BUILD_DIR)/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)/#{target_definition.label}"
-    end
-
     private
 
     # @!group Private Helpers

spec/unit/target/aggregate_target_spec.rb

@@ -80,10 +80,6 @@ module Pod
       it 'returns the path of the xcconfig file relative to the user project' do
         @target.xcconfig_relative_path('Release').should == 'Pods/Target Support Files/Pods/Pods.release.xcconfig'
       end
-
-      it 'returns the path for the CONFIGURATION_BUILD_DIR build setting' do
-        @target.scoped_configuration_build_dir.should == '$(BUILD_DIR)/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)/Pods'
-      end
     end
 
     describe 'Pod targets' do