Don't treat # as comment syntax

It's more common for #foo to signify enum class syntax, and it will
become the only option in future.

Closes #36

Author: Wilfred

hack-mode.el

@@ -1266,11 +1266,6 @@ interpolating inside the XHP expression."
     (modify-syntax-entry ?\\ "\\" table)
     (modify-syntax-entry ?' "\"" table)
 
-    ;; Comments of the form
-    ;; # This is a single-line comment.
-    ;; Tag these as comment sequence b.
-    (modify-syntax-entry ?# "< b" table)
-
     ;; / can start both // and /* style comments. When it's a second
     ;; character, it's a single line comment, so also tag as comment
     ;; sequence b.
@@ -1280,8 +1275,8 @@ interpolating inside the XHP expression."
     ;; character in the end */.
     (modify-syntax-entry ?* ". 23" table)
 
-    ;; Newlines end both # and // comments. Ensure we support both
-    ;; unix and dos style newlines.
+    ;; Newlines end // comments. Ensure we support both unix and dos
+    ;; style newlines.
     (modify-syntax-entry ?\n "> b" table)
     (modify-syntax-entry ?\^m "> b" table)