[Installer] Remove dead code

lib/cocoapods/installer.rb

@@ -141,7 +141,6 @@ module Pod
       UI.section 'Analyzing dependencies' do
         analyze(analyzer)
         validate_build_configurations
-        prepare_for_legacy_compatibility
         clean_sandbox
       end
     end
@@ -243,17 +242,6 @@ module Pod
       end
     end
 
-    # Prepares the Pods folder in order to be compatible with the most recent
-    # version of CocoaPods.
-    #
-    # @return [void]
-    #
-    def prepare_for_legacy_compatibility
-      # move_target_support_files_if_needed
-      # move_Local_Podspecs_to_Podspecs_if_needed
-      # move_pods_to_sources_folder_if_needed
-    end
-
     # @return [void] In this step we clean all the folders that will be
     #         regenerated from scratch and any file which might not be
     #         overwritten.

spec/unit/installer_spec.rb

@@ -99,7 +99,6 @@ module Pod
         config.skip_repo_update = true
         @installer.unstub(:resolve_dependencies)
         @installer.stubs(:validate_build_configurations)
-        @installer.stubs(:prepare_for_legacy_compatibility)
         @installer.stubs(:clean_sandbox)
         def @installer.run_source_provider_hooks
           @hook_called = true
@@ -125,7 +124,6 @@ module Pod
         @installer.podfile.stubs(:plugins).returns(plugins_hash)
         @installer.unstub(:resolve_dependencies)
         @installer.stubs(:validate_build_configurations)
-        @installer.stubs(:prepare_for_legacy_compatibility)
         @installer.stubs(:clean_sandbox)
         @installer.stubs(:ensure_plugins_are_installed!)
         @installer.stubs(:analyze)