enetc: remove variable 'tc_max_sized_frame' set but not used
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/net/ethernet/freescale/enetc/enetc_qos.c: In function enetc_setup_tc_cbs:
drivers/net/ethernet/freescale/enetc/enetc_qos.c:195:6: warning: variable tc_max_sized_frame set but not used [-Wunused-but-set-variable]
Fixes: c431047c4efe ("enetc: add support Credit Based Shaper(CBS) for hardware offload") Signed-off-by: Chen Wandun <chenwandun@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>