Fix two compilation errors in license key API routes:
- reqRepoAdmin() does not exist, use reqAdmin() instead
- m.Delete(handler) needs route pattern: m.Delete("", handler)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Replace ctx.Bind/ctx.APIErrorValidation (which don't exist on
APIContext) with web.GetForm() pattern used by all other API handlers.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>