Re-enabling multitab:misc:typical24.

Regex was fixed in crrev.com/c/1281482

TBR=nednguyen@google.com
NOTRY=true

Bug: 828917,874803
Change-Id: Ib2ce0867b8096c209bb15e65c8d3623c13f6247c
Reviewed-on: https://chromium-review.googlesource.com/c/1292805Reviewed-by: Emily Hanley <eyaich@chromium.org>
Commit-Queue: Emily Hanley <eyaich@chromium.org>
Cr-Commit-Position: refs/heads/master@{#601563}

tools/perf/expectations.config

@@ -214,9 +214,6 @@ crbug.com/894744 [ Android ] startup.mobile/intent:coldish:bbc [ Skip ]
 crbug.com/894744 [ Android ] startup.mobile/intent:warm:bbc [ Skip ]
 
 # Benchmark: system_health.common_desktop
-crbug.com/828917 [ Mac ] system_health.common_desktop/multitab:misc:typical24 [ Skip ]
-crbug.com/874803 [ Win_10 ] system_health.common_desktop/multitab:misc:typical24 [ Skip ]
-crbug.com/874803 [ All ] system_health.common_desktop/multitab:misc:typical24:2018 [ Skip ]
 crbug.com/773084 [ Mac ] system_health.common_desktop/browse:tools:maps [ Skip ]
 crbug.com/839411 [ Win ] system_health.common_desktop/browse:social:twitter_infinite_scroll [ Skip ]
 crbug.com/846022 [ Linux ] system_health.common_desktop/browse:social:twitter_infinite_scroll [ Skip ]