net: mvpp2: remove unused register definition MVPP2_TXQ_THRESH_REG

This register is no longer used since commit edc660fa09e2 ("net: mvpp2:
replace TX coalescing interrupts with hrtimer").

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/marvell/mvpp2.c

@@ -117,9 +117,6 @@
 #define MVPP2_TXQ_DESC_SIZE_REG			0x2088
 #define     MVPP2_TXQ_DESC_SIZE_MASK		0x3ff0
 #define MVPP2_AGGR_TXQ_UPDATE_REG		0x2090
-#define MVPP2_TXQ_THRESH_REG			0x2094
-#define     MVPP2_TRANSMITTED_THRESH_OFFSET	16
-#define     MVPP2_TRANSMITTED_THRESH_MASK	0x3fff0000
 #define MVPP2_TXQ_INDEX_REG			0x2098
 #define MVPP2_TXQ_PREF_BUF_REG			0x209c
 #define     MVPP2_PREF_BUF_PTR(desc)		((desc) & 0xfff)