fix(mosaic): remove unused hasUpdate variable in formatAllPackagesTable

Fixes lint error:
@typescript-eslint/no-unused-vars on hasUpdate

packages/mosaic/src/runtime/update-checker.ts

@@ -441,7 +441,6 @@ export function getInstallAllCommand(outdated: PackageUpdateResult[]): string {
 export function formatAllPackagesTable(results: PackageUpdateResult[]): string {
   if (results.length === 0) return 'No @mosaicstack/* packages found.';
 
-  const hasUpdate = results.some((r) => r.updateAvailable);
   const nameWidth = Math.max(...results.map((r) => r.package.length), 10);
   const verWidth = 10;