perf: Disable v8.browsing_desktop/browse:tools:maps:2019 on linux due to flakiness

TBR=mythria@chromium.org

Bug: 1167686
Change-Id: I50cc010f3e5f7babd2db5328ec8c4435e47646a7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2632961Reviewed-by: Sami Kyöstilä <skyostil@chromium.org>
Commit-Queue: Sami Kyöstilä <skyostil@chromium.org>
Cr-Commit-Position: refs/heads/master@{#844514}

tools/perf/expectations.config

@@ -420,6 +420,7 @@ crbug.com/875159 [ win10 ] v8.browsing_desktop/browse:media:imgur [ Skip ]
 crbug.com/954959 [ linux ] v8.browsing_desktop/browse:media:pinterest:2018 [ Skip ]
 crbug.com/958507 [ desktop ] v8.browsing_desktop/browse:media:imgur [ Skip ]
 crbug.com/1008028 [ desktop ] v8.browsing_desktop/browse:news:hackernews:2020 [ Skip ]
+crbug.com/1167686 [ linux ] v8.browsing_desktop/browse:tools:maps:2019 [ Skip ]
 crbug.com/1009838 [ mac ] v8.browsing_desktop/browse:tools:maps:2019 [ Skip ]
 crbug.com/1008001 [ win ] v8.browsing_desktop/browse:tools:sheets:2019 [ Skip ]
 crbug.com/1023366 [ desktop ] v8.browsing_desktop/browse:media:youtube:2019 [ Skip ]