chore: remove useless comment for tls key log (#20550)

Signed-off-by: rainingmaster <jinhua.tan@bytedance.com>

Mirrored from https://github.com/envoyproxy/envoy @ b77651d0ded885f085f0ac804d3a5f339a9b1925

envoy/extensions/transport_sockets/tls/v3/tls.proto

@@ -131,8 +131,6 @@ message TlsKeyLog {
   // The path to save the TLS key log.
   string path = 1 [(validate.rules).string = {min_len: 1}];
 
-  // At least one of src or dst must be specified, or the config will be rejected as invalid.
-
   // The local IP address that will be used to filter the connection which should save the TLS key log
   // If it is not set, any local IP address  will be matched.
   repeated config.core.v3.CidrRange local_address_range = 2;