remove need for test expectations

Author: lqd

tests/ui/panic-runtime/unwind-tables-target-required.rs

@@ -4,6 +4,7 @@
 // only-x86_64-pc-windows-msvc
 // compile-flags: -C force-unwind-tables=no
 //
+// dont-check-compiler-stderr
 // error-pattern: target requires unwind tables, they cannot be disabled with `-C force-unwind-tables=no`
 
 pub fn main() {