Revert "none security config"

This reverts commit 9b883af99c7ce2510ad841b3b7acf556045ac5e7.

transport/internet/config.go

@@ -128,9 +128,3 @@ func (c *ProxyConfig) HasTag() bool {
 func (m SocketConfig_TProxyMode) IsEnabled() bool {
 	return m != SocketConfig_Off
 }
-
-func init() {
-	common.Must(common.RegisterConfig((*NoneSecurity)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
-		return nil, newError("none security is a placeholder")
-	}))
-}

transport/internet/config.proto

@@ -8,8 +8,6 @@ option java_multiple_files = true;
 
 import "google/protobuf/any.proto";
 
-import "common/protoext/extensions.proto";
-
 enum TransportProtocol {
   TCP = 0;
   UDP = 1;
@@ -96,8 +94,3 @@ message SocketConfig {
 
   int32 tcp_keep_alive_interval = 8;
 }
-
-message NoneSecurity {
-  option (v2ray.core.common.protoext.message_opt).type = "security";
-  option (v2ray.core.common.protoext.message_opt).short_name = "none";
-}