Android BusyBox: remove dead code

Remove Converters.ExistingPathListConverter, it
wasn't used anywhere.

RELNOTES: none
PiperOrigin-RevId: 163810436
GitOrigin-RevId: 8db4454dbe103343d522a05bdd9f083b4cc13ff8
Change-Id: I0b43fd9509766f2dde20645beae3c3246de2f3ae
1 file changed
tree: 181005b249659b89850c04e4fca76a7fd1e5b9ad
  1. java/