refactor: remove unused usage functions and migrate argument parsing to commander.js

src/cli/commands/list-app-permissions.ts

@@ -29,16 +29,6 @@ function omitColumns(input: unknown, names: string[]): unknown {
   );
 }
 
-export function usageListAppPermissions(): string {
-  return `Usage: sk-az-tools list-app-permissions --app-id|-i <appId> [--resolve|-r] [--short|-s] [--filter|-f <glob>] [global options]
-
-Options:
-  --app-id, -i <appId>       Application (client) ID (required)
-  --resolve, -r              Resolve permission GUIDs to human-readable values
-  --short, -s                Makes output more compact
-  --filter, -f <glob>        Filter by permission name glob`;
-}
-
 export async function runListAppPermissionsCommand(options: ListAppPermissionsOptions): Promise<unknown> {
   if (!options.appId) {
     throw new Error("--app-id is required for list-app-permissions");