Remove signed-off-by tags, as the patch changed since the review

patches/busybox/1.18.1/1.18.1-mdadm.diff

@@ -5,8 +5,6 @@ Based on:
 > If /etc/mdadm.conf does not exist in the initrd, it is created first, by
 > scanning devices, and then it is used.
 
-> Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
-
 --- a/Config.in	2010-12-21 06:31:04.000000000 +0200
 +++ mdadm/Config.in	2011-01-12 21:33:01.000000000 +0200
 @@ -749,6 +749,7 @@ source findutils/Config.in

patches/busybox/1.18.1/1.18.1-mdstart.diff

@@ -3,8 +3,6 @@ Based on:
 > Forward-port the old mdstart tool from the Gentoo Busybox-1.1.3.
 > Only fires the RAID_AUTORUN ioctl on existing /dev/md nodes.
 
-> Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
-
 diff -pruN a/include/usage.src.h mdstart/include/usage.src.h
 --- a/include/usage.src.h	2010-12-21 06:29:45.000000000 +0200
 +++ mdstart/include/usage.src.h	2011-01-12 21:29:47.000000000 +0200

patches/busybox/1.18.1/1.18.1-openvt.diff

@@ -6,8 +6,6 @@ Based on:
 > The previous spin of this patch on 1.1.3 had a 'wait(NULL);' right before
 > return EXIT_SUCCESS. I don't think it's needed anymore, so I left it out.
 
-> Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
-
 --- a/console-tools/openvt.c	2010-11-22 22:24:58.000000000 +0200
 +++ b/console-tools/openvt.c	2010-11-29 15:32:18.000000000 +0200
 @@ -124,7 +124,7 @@ int openvt_main(int argc UNUSED_PARAM, c