delete tests baked into emulator system image

- tests are out of maintainence
- the checks were general functional tests on comms related
  areas and should be covered by the same tests across physical
  and virtual devices

Bug: 77496099
Test: build `make -j droid tests dist`
Change-Id: I96b9cc17e9ea618d200ead2ee3e400b4e7cbb9eb