Remove unpacked cruft committed by mistake

It was also causing git lfs fsck to fail:

$ git lfs fsck
pointer: unexpectedGitObject: "tar/test/test_extract.tar.lrz.uu" (treeish 3f7722e6cafc184932dea5c88e9cf905aed1facb) should have been a pointer but was not
pointer: unexpectedGitObject: "tar/test/test_extract.tar.zst.uu" (treeish 3f7722e6cafc184932dea5c88e9cf905aed1facb) should have been a pointer but was not
...
pointer: unexpectedGitObject: "libarchive/test/test_compat_lz4_B7.tar.lz4.uu" (treeish 3f7722e6cafc184932dea5c88e9cf905aed1facb) should have been a pointer but was not
pointer: unexpectedGitObject: "libarchive/test/test_write_disk_mac_metadata.tar.gz.uu" (treeish 3f7722e6cafc184932dea5c88e9cf905aed1facb) should have been a pointer but was not

Signed-off-by: Emanuele Aina emanuele.aina@collabora.com