Revert "Migrate workspace item adding tests to kotlin"

This reverts commit e77eafc2635d27a6bf2120e2dd770bb99ec06102.

Reason for revert: b/207684378
Bug: 207684378
Bug: 199160559

Change-Id: I4a35fea423f1cd7afae4603fd1185150763f8bf0
3 files changed