Remove inline-instrument-coverage-fail.rs test case

src/test/ui/mir/mir-inlining/inline-instrument-coverage-fail.rs

@@ -1,21 +0,0 @@
-// Ensures -Zmir-opt-level=3 (specifically, inlining) is not allowed with -Zinstrument-coverage.
-// Regression test for issue #80060.
-//
-// needs-profiler-support
-// build-pass
-// compile-flags: -Zmir-opt-level=3 -Zinstrument-coverage
-#[inline(never)]
-fn foo() {}
-
-pub fn baz() {
-    bar();
-}
-
-#[inline(always)]
-fn bar() {
-    foo();
-}
-
-fn main() {
-    bar();
-}

src/test/ui/mir/mir-inlining/inline-instrument-coverage-fail.stderr

@@ -1,2 +0,0 @@
-warning: `-Z mir-opt-level=3` (or any level > 1) enables function inlining, which is incompatible with `-Z instrument-coverage`. Inlining will be disabled.
-