Revert "Document DNS cache bypass limitation for resolution_family"

This reverts commit d61e59ee74.

lib/mysql_connection.cpp

@@ -959,10 +959,6 @@ char * MySQL_Connection::connect_start_DNS_lookup() {
 		host_ip = connected_host_details.ip;
 	}
 	else {
-		// NOTE: DNS cache miss — hostname is passed directly to
-		// mysql_real_connect which resolves via the MariaDB client library
-		// using AF_UNSPEC. The mysql-resolution_family setting does NOT
-		// apply here; it only governs the DNS cache resolver thread.
 		host_ip = parent->address;
 	}
 	return host_ip;