no need for ancient mips bits.

Reference: /n/atom/patch/applied2013/bootsasmag
Date: Fri Oct 11 18:53:09 CES 2013
Signed-off-by: quanstro@quanstro.net

--- /sys/src/9/boot/local.c	Fri Oct 11 18:52:49 2013
+++ /sys/src/9/boot/local.c	Fri Oct 11 18:52:49 2013
@@ -18,15 +18,6 @@
 		 * 'root is from' prompt, use it
 		 */
 		disk = sys;
-	} else if(strncmp(argv0, "dksc(0,", 7) == 0){
-		/*
-		 *  on many mips arg0 of the boot command specifies the
-		 *  scsi logical unit number
-		 */
-		p = strchr(argv0, ',');
-		n = strtoul(p+1, 0, 10);
-		sprint(diskname, "#w%d/sd%dfs", n, n);
-		disk = diskname;
 	} else if(mp->arg){
 		/*
 		 *  a default is supplied when the kernel is made
--- /sys/src/nix/boot/local.c	Fri Oct 11 18:52:50 2013
+++ /sys/src/nix/boot/local.c	Fri Oct 11 18:52:50 2013
@@ -18,15 +18,6 @@
 		 * 'root is from' prompt, use it
 		 */
 		disk = sys;
-	} else if(strncmp(argv0, "dksc(0,", 7) == 0){
-		/*
-		 *  on many mips arg0 of the boot command specifies the
-		 *  scsi logical unit number
-		 */
-		p = strchr(argv0, ',');
-		n = strtoul(p+1, 0, 10);
-		sprint(diskname, "#w%d/sd%dfs", n, n);
-		disk = diskname;
 	} else if(mp->arg){
 		/*
 		 *  a default is supplied when the kernel is made