academic/itex2mml: Remove obsolete patch.

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>

academic/itex2mml/bison3-fix.patch

@@ -1,21 +0,0 @@
-diff -wbBur itexToMML/itex-src/itex2MML.y itexToMML.my/itex-src/itex2MML.y
---- itexToMML/itex-src/itex2MML.y	2014-01-05 21:56:04.000000000 +0400
-+++ itexToMML.my/itex-src/itex2MML.y	2014-02-03 21:21:16.455644069 +0400
-@@ -2,6 +2,8 @@
-  *   itex2MML.y last modified 1/5/2014
-  */
- 
-+%parse-param {char **ret_str}
-+
- %{
- #include <stdio.h>
- #include <string.h>
-@@ -27,7 +29,7 @@
- 
-  void (*itex2MML_error) (const char * msg) = itex2MML_default_error;
- 
-- static void yyerror (char * s)
-+ static void yyerror (char **ret_str, char * s)
-    {
-      char * msg = itex2MML_copy3 (s, " at token ", yytext);
-      if (itex2MML_error)

academic/itex2mml/itex2mml.SlackBuild

@@ -48,9 +48,6 @@ find -L . \
  \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
 
-# Fix for bison-3 (thanks to Arch ;-)
-patch -p2 < $CWD/bison3-fix.patch
-
 if [ "$RUBY" = "YES" ]; then
   sed -i \
     -e 's|require "rbconfig"; ||' \