kernel/3.9: remove yaffs patches

...ux/generic/patches-3.9/500-yaffs-Kbuild-integration.patch

....9/501-yaffs-Fix-directory-unlinking-in-yaffs1-mode.patch

...hes-3.9/502-yaffs-Switch-from-semaphores-to-mutexes.patch

...affs-Replace-yaffs_dir_llseek-with-Linux-generic-ll.patch

...hes-3.9/504-yaffs-Mods-for-Linux-3.0-and-fix-a-typo.patch

...eric/patches-3.9/505-yaffs-3.2-use-MTD_OPS_AUTO_OOB.patch

...patches-3.9/506-yaffs-3.2-dont-use-i_nlink-directly.patch

target/linux/generic/patches-3.9/507-yaffs-3.3_fix.patch

.../generic/patches-3.9/508-yaffs-3.3-use-mtd_-helpers.patch

.../509-yaffs-3.4-add-underscore-to-mtd-internal-names.patch

...x/generic/patches-3.9/510-yaffs-3.4-use-d_make_root.patch

...x/generic/patches-3.9/511-yaffs-3.5-use-clear_inode.patch

...ches-3.9/512-yaffs-3.5-convert-to-use-kuid_t-kgid_t.patch

...generic/patches-3.9/513-yaffs-3.6-fix-dir_inode-ops.patch

...4-yaffs-3.6-use-delayed-work-instead-of-write_super.patch