modem-manager: remove wrong gnutls dependency comment

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Acked-by: Petr Vorel <petr.vorel@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/modem-manager/Config.in

@@ -1,7 +1,7 @@
 config BR2_PACKAGE_MODEM_MANAGER
 	bool "modemmanager"
 	depends on BR2_PACKAGE_HAS_UDEV
-	depends on BR2_USE_WCHAR # libglib2 and gnutls
+	depends on BR2_USE_WCHAR # libglib2
 	depends on BR2_TOOLCHAIN_HAS_THREADS # dbus, libglib2
 	depends on BR2_USE_MMU # dbus
 	select BR2_PACKAGE_DBUS # runtime dependency