Delete liblzf from lib as it's no longer used.

core/lib/liblzf-3.5/Changes

core/lib/liblzf-3.5/LICENSE

core/lib/liblzf-3.5/Makefile

core/lib/liblzf-3.5/Makefile.in

core/lib/liblzf-3.5/README

core/lib/liblzf-3.5/config.h

core/lib/liblzf-3.5/config.h.in

core/lib/liblzf-3.5/config.log

core/lib/liblzf-3.5/config.status

core/lib/liblzf-3.5/configure

core/lib/liblzf-3.5/configure.ac

core/lib/liblzf-3.5/crc32.h

core/lib/liblzf-3.5/cs/CLZF.cs

core/lib/liblzf-3.5/cs/README

core/lib/liblzf-3.5/install-sh

core/lib/liblzf-3.5/lzf.c

core/lib/liblzf-3.5/lzf.h

core/lib/liblzf-3.5/lzfP.h

core/lib/liblzf-3.5/lzf_c.c

core/lib/liblzf-3.5/lzf_d.c