From: yu kuai <redacted>
Date: Mon, 6 Jan 2020 20:53:37 +0800

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/net/ethernet/3com/3c59x.c: In function ‘vortex_up’:
drivers/net/ethernet/3com/3c59x.c:1551:9: warning: variable
‘mii_reg1’ set but not used [-Wunused-but-set-variable]

It is never used, and so can be removed.

Signed-off-by: yu kuai <redacted>
---
changes in V2
-The read might have side effects, don't remove it.

Applied to net-next, thank you.