Remove krakatoa

[evanorti]

Remove krakatoa docs

[greptile-apps]

Greptile Summary

This PR removes the Krakatoa experimental mempool documentation from both the CometBFT and Cosmos EVM sections of the docs site, along with their navigation entries in docs.json.

• Two documentation files are deleted: cometbft/next/docs/experimental/krakatoa-mempool.mdx and evm/next/documentation/concepts/experimental/krakatoa-mempool.mdx
• Navigation entries for both pages are removed from docs.json, but the CometBFT "Experimental" group is left with an empty pages array, which will render as a broken empty sidebar section
• sdk/next/upgrade/v054.mdx is not updated — it still contains 5 dead links pointing to the now-deleted Krakatoa pages (lines 45, 47, and 55): /cometbft/next/docs/experimental/krakatoa-mempool (×3) and /evm/next/documentation/concepts/experimental/krakatoa-mempool (×2). These will produce 404s for users visiting the SDK v0.54 upgrade guide.

Confidence Score: 2/5

• Not safe to merge as-is — broken links in an unchanged file and an empty nav group need to be addressed first.
• Two issues block a clean merge: (1) an empty "Experimental" navigation group left in docs.json will render as a broken sidebar entry, and (2) sdk/next/upgrade/v054.mdx retains 5 links to the now-deleted pages, which will produce dead links for users reading the v0.54 upgrade guide.
• docs.json (empty Experimental group) and sdk/next/upgrade/v054.mdx (dangling Krakatoa links — not in this PR's diff but directly impacted)

Important Files Changed

Filename	Overview
cometbft/next/docs/experimental/krakatoa-mempool.mdx	Deleted the CometBFT Krakatoa mempool documentation page (299 lines). Removal is clean with no issues in the file itself.
evm/next/documentation/concepts/experimental/krakatoa-mempool.mdx	Deleted the Cosmos EVM Krakatoa mempool documentation page (285 lines). Removal is clean with no issues in the file itself.
docs.json	Removes navigation entries for both Krakatoa pages, but leaves an empty "Experimental" group in the CometBFT section (lines 5204–5208) that will render as a broken empty nav item.

_{Last reviewed commit: "Update docs.json"}

[greptile-apps]

Empty Experimental navigation group left behind

After removing the krakatoa-mempool entry, the CometBFT "Experimental" group is left with an empty pages array. This will render as an empty, broken navigation section in the docs sidebar. The entire group should be removed since it now has no content.

Suggested change

	{
	"group": "Experimental",
	"pages": [
	"cometbft/next/docs/experimental/krakatoa-mempool"
	]
	},

(Remove lines 5204–5208 entirely — the empty group entry should be deleted.)