Remove pigz directory

Signed-off-by: sndnvaps <sndnvaps@gmail.com>
Update to fix build error
     deleted: yaffs2_static/Android.mk
     deleted: yaffs2_static/mkyaffs2image.c
     deleted: yaffs2_static/mkyaffs2image.h
     deleted: yaffs2_static/unyaffs.c
     deleted: yaffs2_static/unyaffs.h
     deleted: yaffs2_static/yaffs_ecc.c
     deleted: yaffs2_static/yaffs_packedtags2.c
     deleted: yaffs2_static/yaffs_tagsvalidity.c

     modified: Android.mk
     modified: miui/src/utils.h
     modified: recovery.cpp
     modified: recovery_cmds.h

Signed-off-by: sndnvaps <sndnvaps@gmail.com>
Merge pull request #1 from sndnvaps/cm-11.0

Merge new change into branch.