fix(subgraph): remove user-polls relation

[0xmad]

Description

Remove user-polls relation for subgraph

Additional Notes

N/A

Related issue(s)

Related https://github.com/privacy-scaling-explorations/maci-rpgf/issues/153

Confirmation

• [x] I have read and understand MACI's contributor guidelines and code of conduct.
• [x] I have read and understand MACI's GitHub processes.
• [x] I have read and understand MACI's testing guide.

[vercel[bot]]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Updated (UTC)
maci-website	✅ Ready (Inspect)	Visit Preview	Jun 11, 2024 4:52pm