Remove SSSS key upgrade check from rageshake

This code doesn't exist anymore as the SSSS symmetric upgrade stuff has been removed. Fixes element-hq/element-web#13715

Author: dbkr

src/rageshake/submit-rageshake.ts

@@ -133,7 +133,6 @@ export default async function sendBugReport(bugReportEndpoint: string, opts: IOp
  body.append("cross_signing_supported_by_hs",
  String(await client.doesServerSupportUnstableFeature("org.matrix.e2e_cross_signing")));
  body.append("cross_signing_ready", String(await client.isCrossSigningReady()));
- body.append("ssss_key_needs_upgrade", String(await client.secretStorageKeyNeedsUpgrade()));
  }
  }