build: remove unused anyhow dependency

third_party/crates/anyhow-1.0.104/tests/compiletest.rs

@@ -1,7 +0,0 @@
-#[rustversion::attr(not(nightly), ignore = "requires nightly")]
-#[cfg_attr(miri, ignore = "incompatible with miri")]
-#[test]
-fn ui() {
-    let t = trybuild::TestCases::new();
-    t.compile_fail("tests/ui/*.rs");
-}