ofproto: Remove double reporting from bundles.

ofproto: Remove double reporting from bundles.

Patch b0d38b2f17 unified flow mod reporting in ofproto for both
stand-alone flow mods and bundle flow mods, but left bundle-specific
reporting to the bundle removal code.  This patch fixes this by
removing the bundle-specific reporting of flow mods.

Found by inspection.

Fixes: b0d38b2f17 ("ofproto: Report flow mods also from bundles.")
Signed-off-by: Jarno Rajahalme <jarno@ovn.org>
Acked-by: Ben Pfaff <blp@ovn.org>