Revert "Temporarily disable test_vsock on QEMU arches"

This reverts commit c0783e7.

Now the test should work correctly, so we can re-enable it.

Signed-off-by: Stefano Garzarella <[email protected]>

Author: stefano-garzarella

test/sys/test_socket.rs

@@ -1491,7 +1491,6 @@ pub fn test_recv_ipv6pktinfo() {
 }
 
 #[cfg(any(target_os = "android", target_os = "linux"))]
-#[cfg_attr(not(target_arch = "x86_64"), ignore)]
 #[test]
 pub fn test_vsock() {
     use libc;