Remove final traces of long-deprecated "ramdisk" kernel parm

Since the "ramdisk" kernel parameter has been officially deprecated
since at least 2.6.18, might as well finally get rid of it.

Signed-off-by: Robert P. J. Day <[e-mail]>
Acked-by: Geert Uytterhoeven <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

Documentation/kernel-parameters.txt

···
 	raid=		[HW,RAID]
 			See Documentation/md.txt.
 
-	ramdisk=	[RAM] Sizes of RAM disks in kilobytes [deprecated]
-			See Documentation/ramdisk.txt.
-
 	ramdisk_blocksize=	[RAM]
 			See Documentation/ramdisk.txt.
 
 	ramdisk_size=	[RAM] Sizes of RAM disks in kilobytes
-			New name for the ramdisk parameter.
 			See Documentation/ramdisk.txt.
 
 	rcu.blimit=	[KNL,BOOT] Set maximum number of finished

Documentation/m68k/kernel-options.txt

···
            seconds.
 
 
-2.6) ramdisk=
+2.6) ramdisk_size=
 -------------
 
-Syntax: ramdisk=<size>
+Syntax: ramdisk_size=<size>
 
   This option instructs the kernel to set up a ramdisk of the given
 size in KBytes. Do not use this option if the ramdisk contents are

Documentation/ramdisk.txt

···
 directory.  RAM disks are all major number 1, and start with minor number 0
 for /dev/ram0, etc.  If used, modern kernels use /dev/ram0 for an initrd.
 
-The old "ramdisk=<ram_size>" has been changed to "ramdisk_size=<ram_size>" to
-make it clearer.  The original "ramdisk=<ram_size>" has been kept around for
-compatibility reasons, but it may be removed in the future.
-There are also config symbols (in the Block drivers config menu) for these
-variables:  BLK_DEV_RAM_SIZE defaults to 4096 and BLK_DEV_RAM_BLOCKSIZE
-defaults to 1024.
-
 The new RAM disk also has the ability to load compressed RAM disk images,
 allowing one to squeeze more programs onto an average installation or
 rescue floppy disk.

drivers/block/rd.c

···
 	rd_size = simple_strtol(str,NULL,0);
 	return 1;
 }
-static int __init ramdisk_size2(char *str)	/* kludge */
-{
-	return ramdisk_size(str);
-}
 static int __init ramdisk_blocksize(char *str)
 {
 	rd_blocksize = simple_strtol(str,NULL,0);
 	return 1;
 }
-__setup("ramdisk=", ramdisk_size);
-__setup("ramdisk_size=", ramdisk_size2);
+__setup("ramdisk_size=", ramdisk_size);
 __setup("ramdisk_blocksize=", ramdisk_blocksize);
 #endif