Don't load workspace-local helix configurations. This might enable
code execution when running helix in an untrusted repository.

See: https://github.com/helix-editor/helix/issues/2697

Index: helix-loader/src/config.rs
--- helix-loader/src/config.rs.orig
+++ helix-loader/src/config.rs
@@ -11,7 +11,6 @@ pub fn default_lang_config() -> toml::Value {
 pub fn user_lang_config() -> Result<toml::Value, toml::de::Error> {
     let config = [
         crate::config_dir(),
-        crate::find_workspace().0.join(".helix"),
     ]
     .into_iter()
     .map(|path| path.join("languages.toml"))
