remove net/ping dependency

Kirill Platonov · Kirill Platonov · commit 4aafbdc5c42c · 2014-05-10T08:26:32.000+04:00
diff --git a/lib/proxy_manager.rb b/lib/proxy_manager.rb
@@ -1,5 +1,4 @@
 require 'proxy_manager/proxy'
-require 'net/ping'
 
 module ProxyManager
   def self.root
