gnu: source-highlight: Remove obsolete patch.

This should have been done in a952b10c23c9ca5931793d862a718b55492a046d.

* gnu/packages/patches/source-highlight-regexrange-test.patch: Remove.
* gnu-system.am (dist_patch_DATA): Remove it.
* gnu/packages/pretty-print.scm (source-highlight)[source]: Remove patch.

gnu-system.am

@@ -530,7 +530,6 @@ dist_patch_DATA =						\
   gnu/packages/patches/slim-config.patch			\
   gnu/packages/patches/slim-sigusr1.patch			\
   gnu/packages/patches/soprano-find-clucene.patch		\
-  gnu/packages/patches/source-highlight-regexrange-test.patch	\
   gnu/packages/patches/superlu-dist-scotchmetis.patch		\
   gnu/packages/patches/tcsh-fix-autotest.patch			\
   gnu/packages/patches/teckit-cstdio.patch			\

gnu/packages/patches/source-highlight-regexrange-test.patch

@@ -1,15 +0,0 @@
-Disable a single check.  The failure is discussed at:
-
-  https://savannah.gnu.org/bugs/index.php?41786
-
---- a/lib/tests/test_regexranges_main.cpp	2012-04-14 08:58:25.000000000 -0500
-+++ b/lib/tests/test_regexranges_main.cpp	2014-03-05 23:49:23.520402043 -0600
-@@ -52,7 +52,7 @@
-     check_range_regex("simple regex");
-     check_range_regex("[[:alpha:]]+");
-     // test with a wrong regular expression
--    check_range_regex("{notclosed", false);
-+    // check_range_regex("{notclosed", false);
- 
-     // reset regular expressions
-     ranges.clear();

gnu/packages/pretty-print.scm

@@ -152,11 +152,7 @@ different programming languages.")
                           version ".tar.gz"))
       (sha256
        (base32
-        "18xdalxg7yzrxc1njzgw7aryq2jdm7zq2yqz41sc7k6il5z6lcq1"))
-      (patches
-       (list (search-patch
-              ;; Patch submitted as Savannah item #41786
-              "source-highlight-regexrange-test.patch")))))
+        "18xdalxg7yzrxc1njzgw7aryq2jdm7zq2yqz41sc7k6il5z6lcq1"))))
     (build-system gnu-build-system)
     ;; The ctags that comes with emacs does not support the --excmd options,
     ;; so can't be used