openvpn: remove unneeded (R)DEPENDS
openvpn: remove unneeded (R)DEPENDS

The DEPENDS and RDEPENDS added by this openvpn.bbappend were relevant in
historic versions of the recipe, but are no-longer used.

Remove them.

Signed-off-by: Alex Stewart <04cdb2793e4fb0120cc30d1c823099f3862701f4@ni.com>

ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt