Revert "templates/packer: set http(s)_proxy environment variabl…"

This reverts commit 484c82ce55.

The AWS sdk fails to get the instance identity document when the proxy
is configured. The proxy will need to be configured explicitly for the
depsolve job and osbuild (sources) job.

templates/packer/ansible/roles/common/files/worker-initialization-scripts/worker_service.sh

@@ -4,16 +4,5 @@ source /tmp/cloud_init_vars
 
 echo "Starting worker service."
 
-http_proxy=${http_proxy:-}
-https_proxy=${https_proxy:-}
-if [ -n "$http_proxy" ] || [ -n "$https_proxy" ]; then
-   sudo mkdir /etc/systemd/system/osbuild-remote-worker@.service.d/
-   sudo tee -a /etc/systemd/system/osbuild-remote-worker@.service.d/override.conf <<EOF
-[Service]
-Environment="http_proxy=$http_proxy"
-Environment="https_proxy=$https_proxy"
-EOF
-fi
-
 # Prepare osbuild-composer's remote worker services and sockets.
 systemctl enable --now "osbuild-remote-worker@${COMPOSER_HOST}:${COMPOSER_PORT}"