Remove leftover files

These files exist under another directory already so these are
duplicates.

Change-Id: I3f6086c20bf4c08f767f5d76becc441b41a52ed2
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>
Fix broken path formation

Using os.path.join(packages_base_url, '') is not working as expected on
Windows. Use alternative way.

Change-Id: I88fbbd1850c6bdc48b3418db2d2f45ea92f1ff87
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>