fix: remove/apply defer only where it makes sense

:defer is to defer loading because some other action (hook/config/...)
will load it when appropriate.

config.org

@@ -77,7 +77,6 @@ The audible bell is annoying AF.
 #+BEGIN_SRC emacs-lisp
 (use-package whitespace
   :ensure nil
-  :defer t
   :hook (before-save-hook . whitespace-cleanup)
   ;; if we wanna remove this hook at any time, eval:
   ;; (remove-hook 'before-save-hook #'whitespace-cleanup)
@@ -637,7 +636,6 @@ https://github.com/abo-abo/hydra
 
 #+BEGIN_SRC emacs-lisp
 (use-package hydra
-  :defer t
   :config
   ;; Zoom hydra
   (defhydra hydra-zoom (global-map "<f1>")
@@ -726,7 +724,9 @@ https://github.com/victorhge/iedit
 ** Markdown-mode
 
 #+BEGIN_SRC emacs-lisp
-(use-package markdown-mode)
+(use-package markdown-mode
+  :defer t
+)
 
 #+END_SRC
 
@@ -790,6 +790,7 @@ Move to the end if the compilation finishes.
 
 #+BEGIN_SRC emacs-lisp
 (use-package rust-mode
+  :defer t
   :init
   (setq rust-mode-treesitter-derive t))
 #+END_SRC
@@ -797,13 +798,17 @@ Move to the end if the compilation finishes.
 ** Zig
 
 #+BEGIN_SRC emacs-lisp
-(use-package zig-mode)
+(use-package zig-mode
+  :defer t
+  )
 #+END_SRC
 
 ** Python
 
 #+BEGIN_SRC emacs-lisp
-(use-package python-mode)
+(use-package python-mode
+  :defer t
+  )
 #+END_SRC
 
 * Multiple cursors
@@ -896,6 +901,8 @@ Preserve indentation in SRC blocks
 
 #+BEGIN_SRC emacs-lisp
 (use-package org-bullets
+  :defer t
+  :after org
   :config
     (add-hook 'org-mode-hook (lambda () (org-bullets-mode))))
 #+END_SRC
@@ -904,6 +911,8 @@ Preserve indentation in SRC blocks
 
 #+BEGIN_SRC emacs-lisp
 (use-package org-roam
+  :defer t
+  :after org
   :custom
   (org-roam-directory "~/projects/notes")
   (org-roam-completion-everywhere t)
@@ -957,6 +966,8 @@ Preserve indentation in SRC blocks
 
 #+BEGIN_SRC emacs-lisp
 (use-package org-download
+  :defer t
+  :after org
   :config
   (add-hook 'dired-mode-hook 'org-download-enable)
   )