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-rw-r--r--compiler/rustc_builtin_macros/src/lib.rs2
1 files changed, 0 insertions, 2 deletions
diff --git a/compiler/rustc_builtin_macros/src/lib.rs b/compiler/rustc_builtin_macros/src/lib.rs
index 9e7d0ec9e81..9b6dea21438 100644
--- a/compiler/rustc_builtin_macros/src/lib.rs
+++ b/compiler/rustc_builtin_macros/src/lib.rs
@@ -36,7 +36,6 @@ mod cfg_eval;
 mod compile_error;
 mod concat;
 mod concat_bytes;
-mod concat_idents;
 mod define_opaque;
 mod derive;
 mod deriving;
@@ -84,7 +83,6 @@ pub fn register_builtin_macros(resolver: &mut dyn ResolverExpand) {
         compile_error: compile_error::expand_compile_error,
         concat: concat::expand_concat,
         concat_bytes: concat_bytes::expand_concat_bytes,
-        concat_idents: concat_idents::expand_concat_idents,
         const_format_args: format::expand_format_args,
         core_panic: edition_panic::expand_panic,
         env: env::expand_env,