Don't highlight preprocessor syntax

Purescript has no preprocessor, this is a Haskell legacy.

This fixes highlight in multiline strings.

Author: Hi-Angel

purescript-font-lock.el

@@ -211,8 +211,6 @@ Returns keywords suitable for `font-lock-keywords'."
     (setq keywords
           `(;; NOTICE the ordering below is significant
             ;;
-            ("^#.*$" 0 'font-lock-preprocessor-face t)
-
             (,toplevel-keywords 1 (symbol-value 'purescript-keyword-face))
             (,reservedid 1 (symbol-value 'purescript-keyword-face))
             (,reservedsym 1 (symbol-value 'purescript-operator-face))

tests/purescript-font-lock-tests.el

@@ -75,7 +75,6 @@ hello
      (7 19 font-lock-string-face))))
 
 (ert-deftest multiline-string-with-hash ()
-  :expected-result :failed
   (purescript-test-ranges
    "foo = \"\"\"
 # a string with hashtag