net/enic: remove flow count action support

net/enic: remove flow count action support

The firmware in 1400 series VIC adapters which would support COUNT
flow action was postponed and reworked. The capability will be
re-added in a future release when the firmware is available.

This reverts the following commits.
commit 86df6c4e2fce ("net/enic: support flow counter action")
commit 1b4ce87dc5e6 ("net/enic: fix counter action")

Cc: stable@dpdk.org
Signed-off-by: John Daley <johndale@cisco.com>
Reviewed-by: Hyong Youb Kim <hyonkim@cisco.com>