Remove string from metrics

src/routes/getMetrics.ts

@@ -10,9 +10,6 @@ export async function getMetrics(req: Request, res: Response, server: Server): P
         `# HELP sb_uptime Uptime of this instance`,
         `# TYPE sb_uptime counter`,
         `sb_uptime ${process.uptime()}`,
-        `# HELP sb_commit The commit hash of the running version`,
-        `# TYPE sb_commit gauge`,
-        `sb_commit ${(global as any).HEADCOMMIT ?? "unknown"}`,
         `# HELP sb_db_version The version of the database`,
         `# TYPE sb_db_version counter`,
         `sb_db_version ${await db.prepare("get", "SELECT key, value FROM config where key = ?", ["version"]).then(e => e.value).catch(() => -1)}`,