Blackfin: delete unused page_descriptor_table_size define

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

include/asm-blackfin/cplb.h

@@ -73,9 +73,4 @@
 #define SDRAM_EBIU              (PAGE_SIZE_4MB | CPLB_WT | CPLB_L1_AOW | CPLB_USER_RD | CPLB_USER_WR | CPLB_SUPV_WR | CPLB_VALID | ANOMALY_05000158_WORKAROUND)
 #endif
 
-#if defined(CONFIG_BF561)
-#define page_descriptor_table_size (CONFIG_MEM_SIZE/4 + 1 + 4)	/* SDRAM +L1 + ASYNC_Memory */
-#else
-#define page_descriptor_table_size (CONFIG_MEM_SIZE/4 + 2)	/* SDRAM + L1 + ASYNC_Memory */
-#endif
 #endif				/* _CPLB_H */