(Emacs)~init.el: don't compute membibytes on startup

I can just use the numbers computed directly without doing the
recursive call.

Emacs/.config/emacs/init.el

@@ -102,14 +102,8 @@
   (require 'org)
   (require 'eglot))
 
-(defun --powers-of-1024 (n start)
-  (if (= n 0)
-      start
-    (--powers-of-1024 (- n 1) (* 1024 start))))
-
-(let ((mebibyte (--powers-of-1024 2 1)))
-  (setq gc-cons-threshold (* 100 mebibyte) ; ~100MiB
-        read-process-output-max (* 5 mebibyte))) ; ~5MiB
+(setq gc-cons-threshold 104857600 ; ~100MiB
+      read-process-output-max 5242880) ; ~5MiB
 
 (provide 'init)
 ;;; init.el ends here