[test] Speed up get_vm_timeline_rpc_test.dart.

Timing out on IA32 optcounter bot.

Change-Id: I1c9324b4712c963c2b22aaf10965c31c92f75406
Reviewed-on: https://dart-review.googlesource.com/c/78704
Reviewed-by: Siva Annamalai <asiva@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
diff --git a/runtime/observatory/tests/service/get_vm_timeline_rpc_test.dart b/runtime/observatory/tests/service/get_vm_timeline_rpc_test.dart
index 2b7dffe..60a5aeb 100644
--- a/runtime/observatory/tests/service/get_vm_timeline_rpc_test.dart
+++ b/runtime/observatory/tests/service/get_vm_timeline_rpc_test.dart
@@ -71,7 +71,6 @@
 
 void allEventsHaveIsolateNumber(List events) {
   for (Map event in events) {
-    print(event);
     if (event['ph'] == 'M') {
       // Skip meta-data events.
       continue;