~use icomplete/ido for some of the functions

For some functions, which I find don't need to have ivy, let's use
icomplete instead.

Doom/.doom.d/modules/private/completion/config.el

@@ -18,7 +18,10 @@
 (setq icomplete-separator "\t|\t")
 (setq icomplete-in-buffer t)
 
-(after! projectile
-  (setq projectile-completion-system 'default))
+(define-key!
+  [remap compile]           #'compile
+  [remap find-file]         #'find-file
+  [remap describe-function] #'counsel-describe-function
+  [remap describe-variable] #'counsel-describe-variable)
 
 (add-hook 'doom-first-input-hook #'icomplete-mode)