remove use of CTS_TESTCASES_OUT

Bug: 31788743
Test: $ make cts dist
      # check contents of generated package and API coverage
      # report
      $ make checkbuild

Merged-In: Ieec069bafbcc6df5a5b3b06befb4a3a5678a06fd
Change-Id: Ieec069bafbcc6df5a5b3b06befb4a3a5678a06fd
(cherry picked from commit f8f0880b3b8fb6a80ed766068d5f1714625b8960)
2 files changed