[test] Skip slow test on arm simulator

NOTRY=true
TBR=hablich@chromium.org

Change-Id: I36418c2d0198c52a52ba3426a2792b2f52c29d67
Reviewed-on: https://chromium-review.googlesource.com/479411Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44661}

test/cctest/cctest.status

@@ -249,6 +249,13 @@
   'test-cpu-profiler/JsNativeJsRuntimeJsSampleMultiple': [SKIP],
 }],  # 'system == macos'
 
+##############################################################################
+['arch == arm and simulator_run == True', {
+
+  # Pass but take too long with the simulator.
+  'test-api/Threading*': [PASS, SKIP],
+}],  # 'arch == arm and simulator_run == True'
+
 ##############################################################################
 ['arch == arm', {