Removed dependency of net-protocol. There is no plan to remove from stdlib

lib/net/http/net-http.gemspec

@@ -30,6 +30,5 @@ Gem::Specification.new do |spec|
   spec.bindir        = "exe"
   spec.require_paths = ["lib"]
 
-  spec.add_dependency "net-protocol"
   spec.add_dependency "uri"
 end