test/bonding: remove socket id check

test/bonding: remove socket id check

When creating a virtual pmd to test link bonding,
the socket id was checked, if it was in the range
of available sockets.
This check is unnecessary, as the socket specified
might not have memory anyway, so it will fail
at memory allocation.

Therefore, the best solution is to remove this check.

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Acked-by: Declan Doherty <declan.doherty@intel.com>