gnu: imagemagick: Update to 6.9.4-7.

* gnu/packages/patches/imagemagick-CVE-2016-5118.patch: Delete file.
* gnu/local.mk (dist_patch_DATA): Remove it.
* gnu/packages/imagemagick.scm (imagemagick): Update to 6.9.4-7.
[source]: Remove patch.

gnu/packages/imagemagick.scm

@@ -41,15 +41,14 @@
 (define-public imagemagick
   (package
     (name "imagemagick")
-    (version "6.9.4-5")
+    (version "6.9.4-7")
     (source (origin
              (method url-fetch)
              (uri (string-append "mirror://imagemagick/ImageMagick-"
                                  version ".tar.xz"))
-             (patches (search-patches "imagemagick-CVE-2016-5118.patch"))
              (sha256
               (base32
-               "0niwa7ci50865x1h6qffz1q6i2ph2l5ym7bhcg5kdnvi4f75p9ir"))))
+               "11jcbc9phx37m7ra4v3qsfa2iqh3srsvxplxz38h911jvgfchkzm"))))
     (build-system gnu-build-system)
     (arguments
      `(#:configure-flags '("--with-frozenpaths")