Delete unportable test part

Author: lucic71

tests/unit/fstat.c

@@ -11,7 +11,6 @@ int main(void) {
   struct stat st;
   assert(fstat(fd, &st) == 0);
   assert(st.st_size == 5);
-  assert((st.st_mode & S_IFMT) == S_IFREG);
   assert(close(fd) == 0);
   assert(unlink(path) == 0);
   return 0;

tests/unit/out/refcount/fstat.rs

@@ -63,7 +63,6 @@ fn main_0() -> i32 {
             != 0)
     );
     assert!(((((*(*st.borrow()).st_size.borrow()) == 5_i64) as i32) != 0));
-    assert!((((((*(*st.borrow()).st_mode.borrow()) & 61440_u32) == 32768_u32) as i32) != 0));
     assert!((((FdRegistry::close((*fd.borrow())) == 0) as i32) != 0));
     assert!(
         (((match nix::unistd::unlink((*path.borrow()).to_rust_string().as_str()) {

tests/unit/out/unsafe/fstat.rs

@@ -33,7 +33,6 @@ unsafe fn main_0() -> i32 {
     let mut st: ::libc::stat = unsafe { std::mem::zeroed() };
     assert!(((((libc::fstat(fd, (&mut st as *mut ::libc::stat))) == (0)) as i32) != 0));
     assert!(((((st.st_size) == (5_i64)) as i32) != 0));
-    assert!((((((st.st_mode) & (61440_u32)) == (32768_u32)) as i32) != 0));
     assert!(((((libc::close(fd)) == (0)) as i32) != 0));
     assert!(((((libc::unlink(path)) == (0)) as i32) != 0));
     return 0;