[test] Skip more flaky tests

TBR=alph@chromium.org
NOTRY=true

Bug: v8:5193
Change-Id: Ie3d4e67314c80cd1806ba97ac1700b9a95918f73
Reviewed-on: https://chromium-review.googlesource.com/497748Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45122}

test/cctest/cctest.status

@@ -81,10 +81,13 @@
   'test-cpu-profiler/SampleWhenFrameIsNotSetup': [SKIP],
 
   # BUG(v8:5193): Flaky.
+  'test-cpu-profiler/CollectDeoptEvents': [SKIP],
   'test-cpu-profiler/FunctionApplySample': [SKIP],
   'test-cpu-profiler/JsNative1JsNative2JsSample': [SKIP],
   'test-cpu-profiler/JsNativeJsRuntimeJsSample': [SKIP],
+  'test-cpu-profiler/JsNativeJsRuntimeJsSampleMultiple': [SKIP],
   'test-cpu-profiler/JsNativeJsSample': [SKIP],
+  'test-sampler/LibSamplerCollectSample': [SKIP],
 
   # BUG(2340). Preprocessing stack traces is disabled at the moment.
   'test-heap/PreprocessStackTrace': [FAIL],