CMD: Drop CMD_DCR, it's not used

$ git grep CMD_DCR
include/configs/ep8260.h:#undef CONFIG_CMD_DCR
Signed-off-by: NMarek Vasut <marex@denx.de>
Acked-by: NAnatolij Gustschin <agust@denx.de>

include/configs/ep8260.h

@@ -325,7 +325,6 @@
 #define CONFIG_CMD_SDRAM
 #define CONFIG_CMD_SNTP
 
-#undef CONFIG_CMD_DCR
 #undef CONFIG_CMD_XIMG
 
 /* Where do the internal registers live? */