TILE-GX is no longer supported but the tap driver includes it in its
NIC overview ini file which causes a doc warning:
$ make doc-guides-html
sphinx processing guides-html...
Warning generate_nic_overview_table():
Unknown feature 'TILE-Gx' in 'tap.ini'
Fixes: 04b2c3c94346 ("doc: add tap features")
Signed-off-by: John McNamara <john.mcnamara@intel.com>
6a767a694d