ethdev: remove versioning of filter control function

ethdev: remove versioning of filter control function

In 18.02 release the ABI of ethdev component was changed.
To keep compatibility with previous versions of the library
the versioning of rte_eth_dev_filter_ctrl function was implemented.

As soon as deprecation note was issued in 18.02 release, there is
no need to keep compatibility with previous versions.
Remove the versioning of rte_eth_dev_filter_ctrl function.

Signed-off-by: Kirill Rybalchenko <kirill.rybalchenko@intel.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>