Clear old secondary dex dir when multidex becomes supported.

There may be a need for clearing those unused extracted files after an OTA
bringing Art L on the device.

Bug: 10447095

Change-Id: I80b9c0afa2bd8dfa0cf04e96fb04ba2527da0fe5
2 files changed
tree: 170e38c06b9c475ab7e227cdfc56a60514750a82
  1. instrumentation/
  2. library/
  3. MODULE_LICENSE_APACHE2
  4. NOTICE