Remove turn-on-purescript-font-lock and turn-off-purescript-font-lock

The functions provide no useful cases because font-locking is enabled
by default and can be disabled by turning off font-lock (which the
"turn-off" function is a wrapper over). At the same time, the function
constitutes huge chunk of the code and comes up while trying to figure
where things are called from.

Basically, the functions are just duplicating the functional, and I'm
hoping they have no users.

Turns out also, the function removal was attempted in 0a9580d,
however… I am not exactly sure what went wrong but the author only
posted the NEWS entry about the functions being removed, but made no
chages regarding them.

Author: Hi-Angel

purescript-font-lock.el

@@ -31,20 +31,32 @@
 ;; functions, etc.  Supports full PureScript 1.4 as well as LaTeX- and
 ;; Bird-style literate scripts.
 ;;
-;; Installation:
+;; Customisation:
 ;;
-;; To turn font locking on for all PureScript buffers under the PureScript
-;; mode of Moss&Thorn, add this to .emacs:
+;; Two levels of fontification are defined: level one (the default)
+;; and level two (more colour).  The former does not colour operators.
+;; Use the variable `font-lock-maximum-decoration' to choose
+;; non-default levels of fontification.  For example, adding this to
+;; .emacs:
 ;;
-;;    (add-hook 'purescript-mode-hook 'turn-on-purescript-font-lock)
+;;   (setq font-lock-maximum-decoration \\='((purescript-mode . 2) (t . 0)))
 ;;
-;; Otherwise, call `turn-on-purescript-font-lock'.
+;; uses level two fontification for `purescript-mode' and default level for all
+;; other modes. See documentation on this variable for further details.
 ;;
+;; To alter an attribute of a face, add a hook. For example, to change the
+;; foreground colour of comments to brown, add the following line to .emacs:
 ;;
-;; Customisation:
+;;   (add-hook \\='purescript-font-lock-hook
+;;       (lambda ()
+;;           (set-face-foreground \\='purescript-comment-face \"brown\")))
+;;
+;; Note that the colours available vary from system to system. To see what
+;; colours are available on your system, call `list-colors-display' from emacs.
 ;;
-;; The colours and level of font locking may be customised.  See the
-;; documentation on `turn-on-purescript-font-lock' for more details.
+;; Bird-style literate PureScript scripts are supported: If the value of
+;; `purescript-literate-bird-style' (automatically set by the PureScript mode of
+;; Moss&Thorn) is non-nil, a Bird-style literate script is assumed.
 ;;
 ;; Present Limitations/Future Work (contributions are most welcome!):
 ;;
@@ -417,73 +429,6 @@ that should be commented under LaTeX-style literate scripts."
          ;; Get help from font-lock-syntactic-keywords.
          (parse-sexp-lookup-properties . t))))
 
-;; The main functions.
-(defun turn-on-purescript-font-lock ()
-  "Turns on font locking in current buffer for PureScript 1.4 scripts.
-
-Changes the current buffer\\='s `font-lock-defaults', and adds the
-following variables:
-
-   `purescript-keyword-face'      for reserved keywords and syntax,
-   `purescript-constructor-face'  for data- and type-constructors, class names,
-                               and module names,
-   `purescript-operator-face'     for symbolic and alphanumeric operators,
-   `purescript-default-face'      for ordinary code.
-
-The variables are initialised to the following font lock default faces:
-
-   `purescript-keyword-face'      `font-lock-keyword-face'
-   `purescript-constructor-face'  `font-lock-type-face'
-   `purescript-operator-face'     `font-lock-function-name-face'
-   `purescript-default-face'      <default face>
-
-Two levels of fontification are defined: level one (the default)
-and level two (more colour).  The former does not colour operators.
-Use the variable `font-lock-maximum-decoration' to choose
-non-default levels of fontification.  For example, adding this to
-.emacs:
-
-  (setq font-lock-maximum-decoration \\='((purescript-mode . 2) (t . 0)))
-
-uses level two fontification for `purescript-mode' and default level for
-all other modes.  See documentation on this variable for further
-details.
-
-To alter an attribute of a face, add a hook.  For example, to change
-the foreground colour of comments to brown, add the following line to
-.emacs:
-
-  (add-hook \\='purescript-font-lock-hook
-      (lambda ()
-          (set-face-foreground \\='purescript-comment-face \"brown\")))
-
-Note that the colours available vary from system to system.  To see
-what colours are available on your system, call
-`list-colors-display' from emacs.
-
-To turn font locking on for all PureScript buffers, add this to .emacs:
-
-  (add-hook \\='purescript-mode-hook \\='turn-on-purescript-font-lock)
-
-To turn font locking on for the current buffer, call
-`turn-on-purescript-font-lock'.  To turn font locking off in the current
-buffer, call `turn-off-purescript-font-lock'.
-
-Bird-style literate PureScript scripts are supported: If the value of
-`purescript-literate-bird-style' (automatically set by the PureScript mode
-of Moss&Thorn) is non-nil, a Bird-style literate script is assumed.
-
-Invokes `purescript-font-lock-hook' if not nil."
-  (purescript-font-lock-defaults-create)
-  (run-hooks 'purescript-font-lock-hook)
-  (turn-on-font-lock))
-
-(defun turn-off-purescript-font-lock ()
-  "Turns off font locking in current buffer."
-  (font-lock-mode -1))
-
-;; Provide ourselves:
-
 (provide 'purescript-font-lock)
 
 ;; Local Variables: