turn off syscall printings

kernel/src/arch/x86_64/syscall/mod.rs

@@ -113,24 +113,24 @@ pub extern "sysv64" fn syscall_handler(frame: &mut TrapFrame) {
         use SysCall::*;
         match to_print {
             SYS_ACCEPT | SYS_ACCEPT4 | SYS_BIND | SYS_CONNECT | SYS_SHUTDOWN | SYS_LISTEN => {
-                // show &= false;
+                show &= false;
             }
             SYS_RECVFROM | SYS_SENDTO | SYS_SENDMSG | SYS_RECVMSG => {
-                // show &= false;
+                show &= false;
             }
             SYS_SOCKET | SYS_GETSOCKNAME | SYS_GETPEERNAME | SYS_SOCKETPAIR | SYS_SETSOCKOPT
             | SYS_GETSOCKOPT => {
-                // show &= false;
+                show &= false;
             }
             SYS_OPEN | SYS_OPENAT | SYS_CREAT | SYS_CLOSE => {
-                // show &= false;
+                show &= false;
             }
             SYS_READ | SYS_WRITE | SYS_READV | SYS_WRITEV | SYS_PREAD64 | SYS_PWRITE64
             | SYS_PREADV | SYS_PWRITEV | SYS_PREADV2 => {
                 show &= false;
             }
             _ => {
-                // show &= false;
+                show &= false;
             }
         }
         if show {