diff --git a/crates/ra_proc_macro_srv/src/rustc_server.rs b/crates/ra_proc_macro_srv/src/rustc_server.rs
index 76e6a2752ab..92d1fd989d3 100644
--- a/crates/ra_proc_macro_srv/src/rustc_server.rs
+++ b/crates/ra_proc_macro_srv/src/rustc_server.rs
@@ -33,9 +33,7 @@ impl TokenStream {
     pub fn new() -> Self {
         TokenStream { subtree: Default::default() }
     }
-    pub fn with_subtree(subtree: tt::Subtree) -> Self {
-        TokenStream { subtree }
-    }
+
     pub fn is_empty(&self) -> bool {
         self.subtree.token_trees.is_empty()
     }