gnu: udisks: Appease guix lint.

The line is too long and HTML docs are build fine without it.

* gnu/packages/freedesktop.scm (udisks)[arguments]: Remove configure
flag '--enable-gtk-doc'.

Signed-off-by: Efraim Flashner <efraim@flashner.co.il>

gnu/packages/freedesktop.scm

@@ -934,7 +934,6 @@ (define-public udisks
        #:disallowed-references ("doc")            ;enforce separation of "doc"
        #:configure-flags
        (list "--enable-man"
-             "--enable-gtk-doc" ; Without this the HTML doc does not seem to build automatically.
              "--enable-available-modules" ; Such as lvm2, btrfs, etc.
              "--localstatedir=/var"
              "--enable-fhs-media"     ;mount devices in /media, not /run/media