no need spicify swift version of LayoutKit

Author: EkkoG

Podfile

@@ -18,14 +18,3 @@ target 'LayoutFrameworkBenchmark' do
 
     pod 'Reveal-SDK'
 end
-
-
-post_install do |installer|
-  installer.pods_project.targets.each do |target|
-      if ['LayoutKit'].include? target.name
-          target.build_configurations.each do |config|
-              config.build_settings['SWIFT_VERSION'] = '4.1'
-          end
-      end
-  end
-end