avoid converting types into themselves via .into() (clippy::useless-conversion)

example: let x: String = String::from("hello world").into();

crates/rust-analyzer/src/lsp_utils.rs

@@ -36,7 +36,7 @@ impl Progress {
 
 impl GlobalState {
     pub(crate) fn show_message(&mut self, typ: lsp_types::MessageType, message: String) {
-        let message = message.into();
+        let message = message;
         self.send_notification::<lsp_types::notification::ShowMessage>(
             lsp_types::ShowMessageParams { typ, message },
         )