[tools/perf] Stop the jetstream2 benchmark from running on the CQ

In the build found at https://ci.chromium.org/p/chromium/builders/ci/Linux%20Tests%20%28dbg%29%281%29/82258
the benchmark is causing one of the shards to time out.

Bug: chromium:992837
Change-Id: Ib0110a8bb379e89fd94389ed6a7d68fa2cf812e2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1750802
Commit-Queue: Rakib Hasan <rmhasan@google.com>
Reviewed-by: Juan Antonio Navarro Pérez <perezju@chromium.org>
Cr-Commit-Position: refs/heads/master@{#686521}

tools/perf/benchmarks/benchmark_smoke_unittest.py

@@ -24,6 +24,7 @@ from py_utils import discover
 from py_utils import tempfile_ext
 
 from benchmarks import jetstream
+from benchmarks import jetstream2
 from benchmarks import octane
 from benchmarks import rasterize_and_record_micro
 from benchmarks import speedometer
@@ -103,6 +104,7 @@ _BLACK_LIST_TEST_MODULES = {
     rasterize_and_record_micro,  # Always fails on cq bot.
     speedometer,  # Takes 101 seconds.
     jetstream,  # Take 206 seconds.
+    jetstream2, # Causes CQ shard to timeout, crbug.com/992837
     v8_browsing, # Flaky on Android, crbug.com/628368.
 }