MIPS: PMC-Sierra Yosemite: Remove support.

Nobody seems to be interested anymore and upstream also never had an
ethernet driver.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/include/asm/mach-loongson1/war.h

@@ -17,7 +17,6 @@
 #define MIPS4K_ICACHE_REFILL_WAR	0
 #define MIPS_CACHE_SYNC_WAR		0
 #define TX49XX_ICACHE_INDEX_INV_WAR	0
-#define RM9000_CDEX_SMP_WAR		0
 #define ICACHE_REFILLS_WORKAROUND_WAR	0
 #define R10000_LLSC_WAR			0
 #define MIPS34K_MISSED_ITLB_WAR		0