Replace ScheduledThreadPoolExecutor with ScheduledExecutorService

Follows how I2c1d895d503730bea4b4b635db7e04f4126453f8 is done.

Bug: Issue 7155
Change-Id: Ib8c6be8f5f5fd1213deef61de411499a5a01a380
2 files changed
tree: 8a017e0439f4da3b45c366453a473cb18cfe5f80
  1. lib/
  2. src/
  3. .buckconfig
  4. .gitignore
  5. BUCK
  6. BUILD
  7. external_plugin_deps.bzl
  8. LICENSE