Trim list of skipped tests

Signed-off-by: Michel Alexandre Salim <salimma@fedoraproject.org>

rust-nix0.24.spec

@@ -462,7 +462,6 @@ use the "zerocopy" feature of the "%{crate}" crate.
 %check
 # * skip tests that don't work in mock environments
 %cargo_test -- -- \
-  --skip sys::test_socket::test_af_alg_cipher --skip src/sys/socket/mod.rs \
   --skip sys::test_ioctl::linux_ioctls::test_ioctl_write_int \
   --skip test_fcntl::linux_android::test_copy_file_range
 %endif