remove VtsPythonVirtualenvPreparer from modules as they are now part of plan config

Test: run vts-selftest
Bug: 75983870
Change-Id: I6e8c73028c001c50d0bb6a3af61d2a3f67c2c8be
Merged-In: I6e8c73028c001c50d0bb6a3af61d2a3f67c2c8be
(cherry picked from commit 70288fdeaa251a7b572b5855cec4bb205026b2ea)
52 files changed