gnu: libdbusmenu: Remove gtk+-2 input.

* gnu/packages/gtk.scm (libdbusmenu) [arguments]
<configure-flags>: Add '--disable-dumper'.
[inputs]: Remove gtk+-2.

Change-Id: Idd5b92e7f97f7885a75cb86af91eef5b53d5b45a
Signed-off-by: Liliana Marie Prikler <liliana.prikler@gmail.com>

gnu/packages/gtk.scm

@@ -2739,7 +2739,8 @@ printed to standard output.")
                 "--localstatedir=/var"
                 ;; The shebang of the generated test files should be patched
                 ;; before enabling tests.
-                "--disable-tests")
+                "--disable-tests"
+                "--disable-dumper")
         #:make-flags
         #~(list (string-append "typelibdir=" #$output "/lib/girepository-1.0"))
         #:phases
@@ -2771,8 +2772,7 @@ printed to standard output.")
                 (setenv "HAVE_VALGRIND_FALSE" "#"))))))
       (inputs
        (list glib
-             gtk+
-             gtk+-2))
+             gtk+))
       (native-inputs
        (list autoconf
              automake