remove old 'mount -i' patch

patches/busybox/1.7.4/1.7.4-mount-i-option.diff

@@ -1,11 +0,0 @@
---- busybox-1.7.4.orig/util-linux/mount.c	2007-09-03 06:48:56.000000000 -0500
-+++ busybox-1.7.4/util-linux/mount.c	2008-11-13 12:09:53.000000000 -0600
-@@ -1554,7 +1554,7 @@
- 
- 	// Parse remaining options
- 
--	opt = getopt32(argv, "o:t:rwanfvs", &opt_o, &fstype);
-+	opt = getopt32(argv, "o:t:rwanfvsi", &opt_o, &fstype);
- 	if (opt & 0x1) append_mount_options(&cmdopts, opt_o); // -o
- 	//if (opt & 0x2) // -t
- 	if (opt & 0x4) append_mount_options(&cmdopts, "ro"); // -r