revert: don't apply the early background-color hack

This reverts commit d37e4e2.

Author: abougouffa

core/me-builtin.el

@@ -166,15 +166,6 @@
      "Disable previously enabled themes before enabling the new one."
      (mapc #'disable-theme custom-enabled-themes)))
 
-  (advice-add
-   'load-theme :after
-   (satch-defun +theme--save-current-theme-background-color:after-a (&rest _)
-     "Save the background color."
-     (with-temp-buffer
-       (insert (face-background 'default))
-       (let ((buffer-file-name (concat minemacs-cache-dir "background-color")))
-         (+shutup! (basic-save-buffer-1))))))
-
   ;; Show trailing whitespace in `prog-mode' and `conf-mode'
   (+setq-hook! (prog-mode conf-mode) show-trailing-whitespace t)
 

early-init.el

@@ -31,15 +31,6 @@
  menu-bar-mode nil
  scroll-bar-mode nil)
 
-;; In `me-builtin', we advice `load-theme' to save the background color of the
-;; current theme to a file. If that file exists, we load the color and apply it
-;; early to avoid flickering at startup.
-(let* ((bg-color (concat (file-name-directory load-file-name) "local/cache/background-color"))
-       (bg-color (and (file-exists-p bg-color) (with-temp-buffer (insert-file-contents bg-color) (buffer-string)))))
-  ;; Extra checks to ensure we have a valid color value, like #0123fe3
-  (when (and bg-color (length= bg-color 7) (string-equal (substring bg-color 0 1) "#"))
-    (push `(background-color . ,bg-color) default-frame-alist)))
-
 ;; NOTE: In Emacs29+, frames can have a transparent background via the
 ;; `alpha-background' parameter. For a better experience, this value should be
 ;; set early before any frame gets created (i.e. in "early-init.el"). MinEmacs