Remove unused suggestion preview stuffs

Change-Id: Ida5668f4eba1783d96e02001a64ae713f98176b7
13 files changed
tree: d0525c90dfeac74d68fd73c753f364c249c89688
  1. dictionaries/
  2. java/
  3. native/
  4. tests/
  5. tools/
  6. Android.mk
  7. CleanSpec.mk