ext4: Remove old legacy block allocator

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

diff --cc fs/ext4/balloc.c
Simple merge

diff --cc fs/ext4/ext4.h
Simple merge

diff --cc fs/ext4/ext4_i.h
Simple merge

diff --cc fs/ext4/ext4_sb.h
Simple merge

diff --cc fs/ext4/extents.c
Simple merge

diff --cc fs/ext4/file.c
Simple merge

diff --cc fs/ext4/ialloc.c
Simple merge

diff --cc fs/ext4/inode.c
Simple merge

diff --cc fs/ext4/ioctl.c
Simple merge

diff --cc fs/ext4/mballoc.c
Simple merge

diff --cc fs/ext4/resize.c
Simple merge

diff --cc fs/ext4/super.c
Simple merge