[TTS] Remove redundant condition check

operator bool() and is_bound() are the same for InterfacePtr.

Bug: None
Change-Id: I29e311d6e1f80ba49d3ebc15a0b5ad619aff2621
Reviewed-on: https://chromium-review.googlesource.com/c/1471377
Reviewed-by: Donn Denman <donnd@chromium.org>
Commit-Queue: Donn Denman <donnd@chromium.org>
Commit-Queue: Shimi Zhang <ctzsm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#632040}
1 file changed