Remove watchOS

Author: onmyway133

Cache.podspec

@@ -11,7 +11,6 @@ Pod::Spec.new do |s|
   s.ios.deployment_target = '8.0'
   s.osx.deployment_target = '10.9'
   s.tvos.deployment_target = '9.2'
-  s.watchos.deployment_target = '2.0'
 
   s.requires_arc = true
   s.ios.source_files = 'Source/{iOS,Shared}/**/*'