Remove lingering uiua.rs file (#9828)

This PR removes a lingering file related to Uiua support.

This file was no longer being referenced after #9085, but just hadn't
been removed.

Release Notes:

- N/A

crates/languages/src/uiua.rs

@@ -1,52 +0,0 @@
-use anyhow::{anyhow, Result};
-use async_trait::async_trait;
-use language::{LanguageServerName, LspAdapter, LspAdapterDelegate};
-use lsp::LanguageServerBinary;
-use std::{any::Any, path::PathBuf};
-
-pub struct UiuaLanguageServer;
-
-#[async_trait(?Send)]
-impl LspAdapter for UiuaLanguageServer {
-    fn name(&self) -> LanguageServerName {
-        LanguageServerName("uiua".into())
-    }
-
-    async fn fetch_latest_server_version(
-        &self,
-        _: &dyn LspAdapterDelegate,
-    ) -> Result<Box<dyn 'static + Any + Send>> {
-        Ok(Box::new(()))
-    }
-
-    async fn fetch_server_binary(
-        &self,
-        _version: Box<dyn 'static + Send + Any>,
-        _container_dir: PathBuf,
-        _: &dyn LspAdapterDelegate,
-    ) -> Result<LanguageServerBinary> {
-        Err(anyhow!(
-            "uiua must be installed and available in your $PATH"
-        ))
-    }
-
-    async fn cached_server_binary(
-        &self,
-        _: PathBuf,
-        _: &dyn LspAdapterDelegate,
-    ) -> Option<LanguageServerBinary> {
-        Some(LanguageServerBinary {
-            path: "uiua".into(),
-            env: None,
-            arguments: vec!["lsp".into()],
-        })
-    }
-
-    fn can_be_reinstalled(&self) -> bool {
-        false
-    }
-
-    async fn installation_test_binary(&self, _: PathBuf) -> Option<LanguageServerBinary> {
-        None
-    }
-}