Remove *-light tests

Now we can use platform-parametric-runner-lib-no-robo, which has no robo
dependency, so we no longer need these light version.

Fix: 417300851
Flag: EXEMPT host test change only
Test: Update framework code, build RavenwoodCoreTest and
    RavenwoodBivalentTest and make sure robolectric-all won't be
    rebuilt.
Change-Id: I5852add06f9c6219c136d5c492cce6adf20b708c