Don't check for cfg(rust_analyzer) in proc-macro-test

Author: lnicola

src/tools/rust-analyzer/crates/proc-macro-srv/proc-macro-test/imp/src/lib.rs

@@ -1,6 +1,8 @@
 //! Exports a few trivial procedural macros for testing.
 
-#![cfg(any(feature = "sysroot-abi", rust_analyzer))]
+#![cfg(any(feature = "sysroot-abi"))]
+// This causes build issues on rust-lang/rust
+// #![cfg(any(feature = "sysroot-abi", rust_analyzer))]
 #![warn(rust_2018_idioms, unused_lifetimes)]
 #![feature(proc_macro_span, proc_macro_def_site)]