avocado.plugins.vm: Fix reference to an old API

Now there's no more uncompress_zip.

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
avocado.linux.kernel_build: Remove unused imports

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
avocado: Remove unused variables

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
Merge pull request #107 from lmr/fix-archive-mistake

Fix archive mistake