tools/tmux: build the right trace_to_text, remove JSON.
tools/tmux: build the right trace_to_text, remove JSON.

- The previous CL forgot to update the ninja target. We want
  also to build the host-version of T2T as part of tmux.
- Unrelated, remove the JSON conversion in the end of tmux.
  I don't think anybody uses that anymore.

Bug: 218384527
Change-Id: Iac2571ec9e9c8c7f8497e01a72ec8e7ca715b0c2
google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto