VMware: clean up unit tests

Remove unnecessary test class

The patch also removes duplicate test methods. These were duplicated
due to the fact that there were two drivers (ESX and VC). Now we
only have the VC driver.

TrivialFix

Change-Id: Idd0f6848ca05e0793506471bb226e2c3530df8be
Merge "VMware: clean up unit tests"