lsp: Remove reinstall, update config (#18318)

Release Notes:

- Fixed overriding the path of a language server binary for all language
servers. `{"lsp":{"<lsp-name>":{"binary":{"path": "_"}}}}` will now work
for all language servers including those defined by extensions.
- (breaking change) To disable finding lsp adapters in your path, you
must now specify
`{"lsp":{"<lsp-name>":{"binary":{"ignore_system_version": true}}}}`.
Previously this was `{"lsp":{"<lsp-name>":{"binary":{"path_lookup":
false}}}}`. Note that this setting still does not apply to extensions.
- Removed automatic reinstallation of language servers. (It mostly
didn't work)

---------

Co-authored-by: Mikayla <mikayla@zed.dev>

crates/languages/src/json.rs

@@ -186,13 +186,6 @@ impl LspAdapter for JsonLspAdapter {
         get_cached_server_binary(container_dir, &self.node).await
     }
 
-    async fn installation_test_binary(
-        &self,
-        container_dir: PathBuf,
-    ) -> Option<LanguageServerBinary> {
-        get_cached_server_binary(container_dir, &self.node).await
-    }
-
     async fn initialization_options(
         self: Arc<Self>,
         _: &Arc<dyn LspAdapterDelegate>,
@@ -374,18 +367,6 @@ impl LspAdapter for NodeVersionAdapter {
     ) -> Option<LanguageServerBinary> {
         get_cached_version_server_binary(container_dir).await
     }
-
-    async fn installation_test_binary(
-        &self,
-        container_dir: PathBuf,
-    ) -> Option<LanguageServerBinary> {
-        get_cached_version_server_binary(container_dir)
-            .await
-            .map(|mut binary| {
-                binary.arguments = vec!["--version".into()];
-                binary
-            })
-    }
 }
 
 async fn get_cached_version_server_binary(container_dir: PathBuf) -> Option<LanguageServerBinary> {