chore: remove ica storekey

[faddat]

Description

Remove ICA StoreKey

closes: #4644

Commit Message / Changelog Entry

chore: remove ica storekey

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---

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• Targeted PR against correct branch (see CONTRIBUTING.md).
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Code follows the module structure standards and Go style guide.
• Wrote unit and integration tests.
• Updated relevant documentation (docs/) or specification (x/<module>/spec/).
• Added relevant godoc comments.
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• Review Codecov Report in the comment section below once CI passes.

[crodriguezvega]

Thank you, @faddat. Would it be possible to take all the module bumps out of this PR?

[damiannolan]

Thanks @faddat, lgtm! 🚀

[codecov-commenter]

Codecov Report

Merging #4677 (aafdc85) into main (82d66ad) will increase coverage by 0.00%.
The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4677   +/-   ##
=======================================
  Coverage   79.65%   79.66%           
=======================================
  Files         187      187           
  Lines       13195    13196    +1     
=======================================
+ Hits        10511    10512    +1     
  Misses       2253     2253           
  Partials      431      431           

Files Changed	Coverage Δ
modules/apps/27-interchain-accounts/types/keys.go	100.00% <ø> (ø)
modules/apps/27-interchain-accounts/module.go	49.50% <100.00%> (+0.50%)	⬆️