clean up in echo reference code

Change-Id: Ie06ed382eee2f1d4d1289d9a49d8a93dcf103e4e
1 file changed
tree: cc4302e3832c8ab88a4bf0ac1e15d1616e4eab00
  1. audio_effects/
  2. audio_utils/
  3. mca/
  4. wilhelm/
  5. CleanSpec.mk