Revert "ui: Show process and thread track names as track labels"

This reverts commit b8bcb0f1f5b155915e9b8be038830bf8939d06c7.

Change-Id: Ib5d55ed57d38cc56b5e1142358f6a0e6d9cf2046
diff --git a/ui/src/controller/trace_controller.ts b/ui/src/controller/trace_controller.ts
index a480b09..a18e05a 100644
--- a/ui/src/controller/trace_controller.ts
+++ b/ui/src/controller/trace_controller.ts
@@ -603,8 +603,8 @@
           tid,
           upid,
           pid,
-          ifnull(thread_track.name, thread.name) as threadName,
-          ifnull(process_track.name, process.name) as processName,
+          thread.name as threadName,
+          process.name as processName,
           total_dur as totalDur,
           ifnull(has_sched, false) as hasSched
         from
@@ -612,9 +612,7 @@
           left join (select utid, count(1), true as has_sched
               from sched group by utid
           ) using(utid)
-          left join process_track using(upid)
           left join process using(upid)
-          left join thread_track using(utid)
           left join (select upid, sum(dur) as total_dur
               from sched join thread using(utid)
               group by upid