Revert "[script/post-update] calling emerge-webrsync before invoking emerge, and cleanup after"

This reverts commit c0d736ccb8.

script/post-update.sh

@@ -109,12 +109,9 @@ FILES_TO_REMOVE=(
 
 # emerge preserved rebuild that are left behind in the next stages. this happens because first stage isn't automated (yet) and the next one that regenerate locales
 # is run in dockerhub (which is really slow and prone to fails) instead of circleci
-emerge-webrsync
 emerge @preserved-rebuild
 equo rescue spmsync
-pushd /usr/portage/
-ls | grep -v 'profiles' | grep -v 'metadata' | xargs rm -rf
-popd
+
 # Upgrading packages
 rsync -av "rsync://rsync.at.gentoo.org/gentoo-portage/licenses/" "/usr/portage/licenses/" && ls /usr/portage/licenses -1 | xargs -0 > /etc/entropy/packages/license.accept && \
 equo up && equo u && \