Remove GitHub database download feature flag

This removes the `codeQL.githubDatabase.enable` setting and always
enables the GitHub database download feature.

extensions/ql-vscode/src/config.ts

@@ -762,8 +762,6 @@ export class ModelConfigListener extends ConfigListener implements ModelConfig {
 
 const GITHUB_DATABASE_SETTING = new Setting("githubDatabase", ROOT_SETTING);
 
-// Feature flag for the GitHub database downnload.
-const GITHUB_DATABASE_ENABLE = new Setting("enable", GITHUB_DATABASE_SETTING);
 const GITHUB_DATABASE_DOWNLOAD = new Setting(
   "download",
   GITHUB_DATABASE_SETTING,
@@ -778,7 +776,6 @@ const GitHubDatabaseUpdateValues = ["ask", "never"] as const;
 type GitHubDatabaseUpdate = (typeof GitHubDatabaseUpdateValues)[number];
 
 export interface GitHubDatabaseConfig {
-  enable: boolean;
   download: GitHubDatabaseDownload;
   update: GitHubDatabaseUpdate;
   setDownload(
@@ -802,10 +799,6 @@ export class GitHubDatabaseConfigListener
     );
   }
 
-  public get enable() {
-    return !!GITHUB_DATABASE_ENABLE.getValue<boolean>();
-  }
-
   public get download(): GitHubDatabaseDownload {
     const value = GITHUB_DATABASE_DOWNLOAD.getValue<GitHubDatabaseDownload>();
     return GitHubDatabaseDownloadValues.includes(value) ? value : "ask";

extensions/ql-vscode/src/databases/github-databases/github-databases-module.ts

@@ -60,10 +60,6 @@ export class GitHubDatabasesModule extends DisposableObject {
   }
 
   private async initialize(): Promise<void> {
-    if (!this.config.enable) {
-      return;
-    }
-
     // Start the check and downloading the database asynchronously. We don't want to block on this
     // in extension activation since this makes network requests and waits for user input.
     void this.promptGitHubRepositoryDownload().catch((e: unknown) => {