Jump to definition is broken with LSP and doom-emacs

`M-.` is broken when using it with lsp-mode and doom-emacs, which has a very nice setup that works with all other language modes. The problem is that `M-.` is bound to the internal haskell-mode function [haskell-mode-jump-to-def-or-tag](https://github.com/haskell/haskell-mode/blame/c3d3e23b7b0e99bee382b3192629584202e6613b/haskell.el#L44). This prevents lsp-mode and doom-emacs from using it, and results in it not working at all with the error `Unable to find symbol in current document`.

The only way to fix this is to unset the keybinding after loading `haskell-mode`.