remove unnecessary assert for exit-code

Author: boozook

tests/run-make/target-specs-filename/rmake.rs

@@ -15,8 +15,6 @@ fn main() {
     ] {
         for args in [["cfg"].as_slice(), &["target-spec-json", "-Zunstable-options"]] {
             let output = rustc().arg("--print").args(args).args(["--target", file]).run();
-            // check that the target triple is accepted without failures
-            assert!(output.status().success(), "target triple doesn't accepted");
             // check that the target triple is read correctly
             output.assert_stdout_contains("x86_64");
         }