refactor!: remove highlight-numbers

BREAKING CHANGE: Numerics will no longer be syntax highlighted in major
modes that don't already have their own (or provided by tree-sitter). No
substitute will be provided because it's trivial for the user to install
themselves.

Ref: https://github.com/orgs/doomemacs/projects/5/views/1?pane=issue&itemId=117610783

lisp/doom-editor.el

@@ -646,7 +646,6 @@ on."
   (cl-callf append so-long-minor-modes
     '(spell-fu-mode
       eldoc-mode
-      highlight-numbers-mode
       better-jumper-local-mode
       ws-butler-mode
       auto-composition-mode

lisp/doom-ui.el

@@ -479,11 +479,6 @@ windows, switch to `doom-fallback-buffer'. Otherwise, delegate to original
 (add-hook! '(completion-list-mode-hook Man-mode-hook)
            #'hide-mode-line-mode)
 
-;; Many major modes do no highlighting of number literals, so we do it for them
-(use-package! highlight-numbers
-  :hook ((prog-mode conf-mode) . highlight-numbers-mode)
-  :config (setq highlight-numbers-generic-regexp "\\_<[[:digit:]]+\\(?:\\.[0-9]*\\)?\\_>"))
-
 ;;;###package image
 (setq image-animate-loop t)
 

lisp/packages.el

@@ -23,7 +23,6 @@
 ;; doom-ui.el
 (package! nerd-icons :pin "d972dee349395ffae8fceae790d22fedc8fe08e8")
 (package! hide-mode-line :pin "ddd154f1e04d666cd004bf8212ead8684429350d")
-(package! highlight-numbers :pin "8b4744c7f46c72b1d3d599d4fb75ef8183dee307")
 (package! rainbow-delimiters :pin "f40ece58df8b2f0fb6c8576b527755a552a5e763")
 (package! restart-emacs :pin "1607da2bc657fe05ae01f7fdf26f716eafead02c")