Remove commented out statement

Author: yaito3014

src/index.ts

@@ -11,7 +11,6 @@ const pull_request_number = parseInt(process.env.GITHUB_REF?.split("/")[2]!);
 
 const appId = 1230093;
 const privateKey = process.env.INPUT_PRIVATE_KEY!;
-// const installationId = parseInt(process.env.INPUT_INSTALLATION_ID!);
 
 const app = new App({ appId, privateKey });
 const { data: installationId } = await app.octokit.request("POST /repos/{owner}/{repo}/installation", { owner, repo });