refactor!: remove stride's ICA liquid staking modules

[hallazzang]

Description

Closes: MILK-151

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[RiccardoM]

Everything looks good, however could you please split the changes that are not related to the removal of the modules (the addition of ratelimit and the typo fixes) in another PR please?

This because I would like to keep the commit in the main branch to only deal with the removal, so that if we ever need to revert it we don't affect anything else (e.g. by removing the added key).

[hallazzang]

Oh I didn't notice that I accidentally included the typo fix. Also I just realized that I removed the whole ICA functionality which is not this PR meant to. I'll force-push changes again.

[RiccardoM]

@hallazzang Removing the ICA funcionality is fine. We can have another PR for that though 👍

[hallazzang]

I'll be focusing on removing Stride's code in this PR. Let's remove ICA in another PR. Also, I didn't add ratelimit, I just moved the line above.

[RiccardoM]

@hallazzang Please take care of creating a new PR to remove the ICA modules. Thanks!