Delete unportable test part

Author: lucic71

tests/unit/ifaddrs.c

@@ -1,5 +1,4 @@
 #include <assert.h>
-#include <errno.h>
 #include <ifaddrs.h>
 #include <net/if.h>
 #include <netinet/in.h>
@@ -36,8 +35,6 @@ int main(void) {
   assert(found_loopback);
   freeifaddrs(list);
 
-  errno = 0;
   assert(if_nametoindex("cpp2rust_no_such_if") == 0);
-  assert(errno == ENODEV);
   return 0;
 }

tests/unit/out/refcount/ifaddrs.rs

@@ -145,7 +145,6 @@ fn main_0() -> i32 {
             __cur = __next;
         }
     };
-    libcc2rs::cpp2rust_errno().write(0);
     assert!(
         (((match nix::net::if_::if_nametoindex(
             Ptr::from_string_literal(b"cpp2rust_no_such_if")
@@ -160,6 +159,5 @@ fn main_0() -> i32 {
         } == 0_u32) as i32)
             != 0)
     );
-    assert!(((((libcc2rs::cpp2rust_errno().read()) == 19) as i32) != 0));
     return 0;
 }

tests/unit/out/unsafe/ifaddrs.rs

@@ -87,12 +87,10 @@ unsafe fn main_0() -> i32 {
     }
     assert!((found_loopback != 0));
     libc::freeifaddrs(list);
-    (*libcc2rs::cpp2rust_errno_unsafe()) = 0;
     assert!(
         ((((libc::if_nametoindex((c"cpp2rust_no_such_if".as_ptr().cast_mut()).cast_const()))
             == (0_u32)) as i32)
             != 0)
     );
-    assert!(((((*libcc2rs::cpp2rust_errno_unsafe()) == (19)) as i32) != 0));
     return 0;
 }