Fix timestampns test

Author: WiSaGaN

test/sys/test_socket.rs

@@ -1590,10 +1590,7 @@ fn test_recvmsg_timestampns() {
 // Disable the test on emulated platforms because it fails in Cirrus-CI.  Lack of QEMU
 // support is suspected.
 #[cfg_attr(any(not(any(target_arch = "x86_64")), any(target_env = "musl")), ignore)]
-#[cfg(all(target_os = "linux", any(
-            target_arch = "x86_64",
-            target_arch = "aarch64",
-            ), not(target_env = "musl")))]
+#[cfg(all(target_os = "linux"))]
 #[test]
 fn test_recvmmsg_timestampns() {
     use nix::sys::socket::*;