Remove the get-number-at-point function

thing-at-point already has `number-at-point`.

configuration.org

@@ -268,17 +268,6 @@ it as early as possible.
 
 ** Utility functions
 
-*** Get the number at point
-
-#+BEGIN_SRC emacs-lisp
-(defun get-number-at-point ()
-  (interactive)
-  (skip-chars-backward "0123456789.-")
-  (or (looking-at "[0123456789.-]+")
-      (error "No number at point"))
-  (string-to-number (match-string 0)))
-#+END_SRC
-
 *** Round number at point to the given decimals
 
 #+BEGIN_SRC emacs-lisp
@@ -290,7 +279,7 @@ it as early as possible.
                (fround
                 (*
                  mult
-                 (get-number-at-point)))
+                 (number-at-point)))
                 mult)))))
 #+END_SRC