trace_to_text: Remove a bunch of unused code from trace_to_text

Change-Id: I004301760c5afdc319ec843a9625fe8cfcd5202e
diff --git a/Android.bp b/Android.bp
index 33bfe98..54a9d23 100644
--- a/Android.bp
+++ b/Android.bp
@@ -3175,7 +3175,6 @@
     "src/trace_processor/trace_storage.cc",
     "src/trace_processor/virtual_destructors.cc",
     "src/trace_processor/window_operator_table.cc",
-    "tools/trace_to_text/ftrace_event_formatter.cc",
     "tools/trace_to_text/main.cc",
     "tools/trace_to_text/proto_full_utils.cc",
     "tools/trace_to_text/trace_to_profile.cc",
@@ -3340,4 +3339,4 @@
   srcs: [
     "protos/perfetto/config/perfetto_config.proto",
   ],
-}
+}
\ No newline at end of file