Auto merge of #10669 - oli-obk:@, r=Alexendoo

Update to a compiletest-rs version that requires `//@` for commands

Requires https://github.com/Manishearth/compiletest-rs/pull/261 to get published

This PR is a smaller step towards https://github.com/rust-lang/rust-clippy/pull/10426

changelog: Move to a version of compiletest-rs that allows us to require `//`@`` for test suite commands.

clippy_lints/src/methods/obfuscated_if_else.rs

@@ -1,5 +1,3 @@
-// run-rustfix
-
 use super::OBFUSCATED_IF_ELSE;
 use clippy_utils::{diagnostics::span_lint_and_sugg, source::snippet_with_applicability};
 use rustc_errors::Applicability;