get-all-dists.sh: remove stretch since debian/eol:stretch is not there yet

get-all-dist.sh

@@ -1,2 +1,2 @@
 #!/bin/bash
-find . -name Dockerfile -exec dirname {} \; | jq -R . | sed 's#./##g' | jq -cs .
+find . -name Dockerfile -exec dirname {} \; | grep -v 'stretch'| jq -R . | sed 's#./##g' | jq -cs .