Remove custom implementations of features available in Nova 2 (#105)

* Remove custom implementations of now-core features

- Remove autoSuggest
- Remove codeAction
- Remove goToDefinition
- Remove applyEdit

* Tests

Author: apexskier

src/applyWorkspaceEdit.ts

@@ -3,6 +3,8 @@ import type * as lspTypes from "vscode-languageserver-protocol";
 import { openFile } from "./novaUtils";
 import { lspRangeToRange } from "./lspNovaConversions";
 
+// @Deprecated I want to replace this with a call to Nova's client with workspace/applyEdit, but that's currently not possible.
+// I've requested this feature.
 export async function applyWorkspaceEdit(
   workspaceEdit: lspTypes.WorkspaceEdit
 ) {