Remove all references to images v1

*Images v1 will soon be deprecated so the test code needs to  be removed
*Removed images v1 behaviors
*Removed images v1 client
*Removed images v1 models
*Removed images v1 metatests

Change-Id: If7279be4096c525780877d84a465930d0000341c
Merge "Remove all references to images v1"