remove content of tests/__init__.py
remove content of tests/__init__.py

this is a shared file for functional and unit tests.
this file is not needed.

Change-Id: I109e55561faa5ce73ac3ea164858281fb5cbd077

hayderimran7/ec2-api,hayderimran7/ec2-api,openstack/ec2-api,openstack/ec2-api,stackforge/ec2-api,stackforge/ec2-api