Fix clippy::clone-on-copy

Author: spk

src/language_server_protocol.rs

@@ -920,7 +920,7 @@ impl LanguageClient {
             Some(initialization_options)
         };
 
-        let trace = self.get(|state| state.trace.clone())?;
+        let trace = self.get(|state| state.trace)?;
 
         let result: Value = self.get_client(&Some(languageId.clone()))?.call(
             lsp::request::Initialize::METHOD,