C-down-mouse-2 -> reset text-scale

Make this universal. Also removes redundant C-mouse-{4,5} mouse
bindings, they're already bound by mouse-wheel-mode.

modules/config/default/+emacs-bindings.el

@@ -418,9 +418,6 @@
 (map! "C-'" #'imenu
 
       ;;; Text scaling
-      [C-mouse-4] #'text-scale-increase
-      [C-mouse-5] #'text-scale-decrease
-      [C-down-mouse-2] (cmd! (text-scale-set 0))
       "M-+" #'doom/reset-font-size
       "M-=" #'doom/increase-font-size
       "M--" #'doom/decrease-font-size

modules/config/default/config.el

@@ -427,6 +427,11 @@ Continues comments if executed from a commented line. Consults
         ;; which ctrl+RET will add a new "item" below the current one and
         ;; cmd+RET (Mac) / meta+RET (elsewhere) will add a new, blank line below
         ;; the current one.
+
+        ;; C-<mouse-scroll-up>   = text scale increase
+        ;; C-<mouse-scroll-down> = text scale decrease
+        [C-down-mouse-2] (cmd! (text-scale-set 0))
+
         ;; auto-indent on newline by default
         :gi [remap newline] #'newline-and-indent
         ;; insert literal newline