Remove Python f-string font locking hack

It is now supported by python-mode natively.

configuration.org

@@ -870,29 +870,6 @@ to the beginning of the file."
       (goto-char point-pos))))
 #+END_SRC
 
-*** Font-lock variables in f-strings
-:PROPERTIES:
-:SOURCE:   https://emacs.stackexchange.com/a/55186/507
-:END:
-
-#+BEGIN_SRC emacs-lisp :tangle no
-(with-eval-after-load "python"
-  (setq python-font-lock-keywords
-        (append python-font-lock-keywords
-                '(;; this is the full string.
-                  ;; group 1 is the quote type and a closing quote is matched
-                  ;; group 2 is the string part
-                  ("f\\(['\"]\\{1,3\\}\\)\\([^\\1]+?\\)\\1"
-                   ;; these are the {keywords}
-                   ("{[^}]*?}"
-                    ;; Pre-match form
-                    (progn (goto-char (match-beginning 0)) (match-end 0))
-                    ;; Post-match form
-                    (goto-char (match-end 0))
-                    ;; face for this match
-                    (0 font-lock-variable-name-face t)))))))
-#+END_SRC
-
 ** Jinja related
 
 *** Mark a string as translatable