Remove dependency on more-asserts (#4408)

* Remove dependency on `more-asserts`

In my recent adventures to do a bit of gardening on our dependencies I
noticed that there's a new major version for the `more-asserts` crate.
Instead of updating to this though I've opted to instead remove the
dependency since I don't think we heavily lean on this crate and
otherwise one-off prints are probably sufficient to avoid the need for
pulling in a whole crate for this.

* Remove exemption for `more-asserts`

crates/test-programs/wasi-tests/src/bin/close_preopen.rs

@@ -1,11 +1,10 @@
-use more_asserts::assert_gt;
 use std::{env, process};
 use wasi_tests::{assert_errno, open_scratch_directory};
 
 unsafe fn test_close_preopen(dir_fd: wasi::Fd) {
     let pre_fd: wasi::Fd = (libc::STDERR_FILENO + 1) as wasi::Fd;
 
-    assert_gt!(dir_fd, pre_fd, "dir_fd number");
+    assert!(dir_fd > pre_fd, "dir_fd number");
 
     // Try to close a preopened directory handle.
     assert_errno!(