can: peak_canfd: Remove unused macros

CANFD_CLK_SEL_DIV_MASK and CANFD_OPTIONS_SET are
never used after they were introduced. Remove them.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Link: https://lore.kernel.org/r/20200904131247.23021-1-wanghai38@huawei.com
[mkl: keep CANFD_CLK_SEL_DIV_MASK for documentation purpose]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

drivers/net/can/peak_canfd/peak_pciefd_main.c

@@ -116,8 +116,6 @@ MODULE_LICENSE("GPL v2");
 #define CANFD_CTL_IRQ_CL_DEF	16	/* Rx msg max nb per IRQ in Rx DMA */
 #define CANFD_CTL_IRQ_TL_DEF	10	/* Time before IRQ if < CL (x100 µs) */
 
-#define CANFD_OPTIONS_SET	(CANFD_OPTION_ERROR | CANFD_OPTION_BUSLOAD)
-
 /* Tx anticipation window (link logical address should be aligned on 2K
  * boundary)
  */