Revert "Expects nvim-hs test suite failure (#6425)"
Revert "Expects nvim-hs test suite failure (#6425)"

This reverts commit 18257b661c28987f161e9f96748e3ff3bff27209.

Version 2.2.0.1 of nvim-hs doesn't fail in tests if neovim isn't
installed: https://github.com/neovimhaskell/nvim-hs/commit/1e6bafbab5d69605e564c52e1d7549970b440200

jonschoning/stackage,mrkkrp/stackage,Daniel-Diaz/stackage,simonmichael/stackage