Do not make unnecesary requests

[anxolin]

We still have some hooks that make requests we don't need.
We should cleanup unnecesary logic, like the claiming logic.

example:

• Requested URL: https://gentle-frost-9e74.uniswap.workers.dev/100/0x424a46612794dbb8000194937834250Dc723fFa5
• https://github.com/gnosis/gp-swap-ui/blob/a25a95173927f30ee79e349886f3c49f330c8c18/src/state/claim/hooks.ts#L32

Original issue gnosis/cowswap#111 by @anxolin