fuzz, quic: avoid debug stdout spam while fuzzing

Author: two-heart

src/waltz/quic/tests/fuzz_quic_wire.c

@@ -34,8 +34,6 @@ LLVMFuzzerInitialize( int *    pargc,
   putenv( "FD_LOG_BACKTRACE=0" );
   fd_boot( pargc, pargv );
   atexit( fd_halt );
-  fd_log_level_logfile_set(0);
-  fd_log_level_stderr_set(0);
 # ifndef FD_DEBUG_MODE
   fd_log_level_core_set(3); /* crash on warning log */
 # endif