Disable flaky SystemHealthBenchmarkSmokeTest

Failing builds for example:
https://ci.chromium.org/p/chromium/builders/ci/Linux%20Tests%20%28dbg%29%281%29/83781
https://ci.chromium.org/p/chromium/builders/ci/Linux%20Tests%20%28dbg%29%281%29/83780
https://ci.chromium.org/p/chromium/builders/ci/Linux%20Tests%20%28dbg%29%281%29/83779

TBR=rmcilroy@chromium.org,perezju@chromium.org

Bug: 1008001
Notry: true
Change-Id: I1698c7b3d086d4238cca849c31ccb3ab806e581b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1852206
Commit-Queue: Dominik Röttsches <drott@chromium.org>
Reviewed-by: Dominik Röttsches <drott@chromium.org>
Cr-Commit-Position: refs/heads/master@{#704579}

tools/perf/benchmarks/system_health_smoke_test.py

@@ -163,6 +163,7 @@ _DISABLED_TESTS = frozenset({
 
   # crbug.com/1008001
   'system_health.memory_desktop/browse:tools:sheets:2019',
+  'system_health.memory_desktop/browse:tools:maps:2019',
 
   # The following tests are disabled because they are disabled on the perf
   # waterfall (using tools/perf/expectations.config) on one platform or another.