examples/l3fwd: remove limitation on Tx queue count
examples/l3fwd: remove limitation on Tx queue count

In l3fwd no of transmit queues is calculated based on no of
lcores with which it is launched. Hence maximum no of tx
queues possible per port should depend on RTE_MAX_LCORE value.

Fixes: af75078fece3 ("first public release")
Cc: stable@dpdk.org

Signed-off-by: Harman Kalra <568a3484dfecf16d6b30cd214c570848bb408570@marvell.com>
Reviewed-by: David Marchand <f28529695cfa9e3e1eb84e7072aa626af4abb18e@redhat.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk