Remove tests that are passing locally and on the bot.

- SystemNetworkContextManagerMaxConnectionsPerProxyBrowsertest.MaxConnectionsPerProxy was renamed
  in https://crrev.com/c/1767094

- BookmarksCommandManagerTest.All can be seen passing 100 times here
  https://chromium-swarm.appspot.com/task?id=48104c14d9892f10

- all other removed tests can be seen passing (also remaining tests can be seen failing) here

Change-Id: I6aba8db97ad3e24ae84a5d0afe539878784636ba
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1875353Reviewed-by: Kouhei Ueno <kouhei@chromium.org>
Commit-Queue: Fergal Daly <fergal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#708949}

testing/buildbot/filters/bfcache.browser_tests.filter

 # These tests currently fail when run with --enable-features=BackForwardCache
 
-# No focused view.
--PaymentRequestShippingAddressEditorTest.FocusFirstInvalidField_NotName
-
 # Test are using a custom NavigateToURL function waiting for the old
 # RenderFrameHost to be deleted. This won't happen.
 -ProcessManagementTest.ExtensionProcessBalancing
@@ -13,14 +10,11 @@
 # but it isn't reloaded at all with the BackForwardCache.
 -PreviewsLitePageRedirectServerBrowserTest.LitePagePreviewsNavigation/*
 
-# Very flaky. Can't reproduce locally, it always succeed.
--SystemNetworkContextManagerMaxConnectionsPerProxyBrowsertest.MaxConnectionsPerProxy
-
 # Flaky on the bots, need to be investigated, see https://crbug.com/1010870.
+# 16/100 failures.
+# https://chromium-swarm.appspot.com/task?id=48104c14d9892f10
 -BookmarksCommandManagerTest.All
 
 # Time out since the removal of bfcache timed eviction. Probably waiting on the
 # RenderFrameHost deletion.
 -CredentialManagerBrowserTest.StoreInUnloadHandler_CrossSite_OnDemandMojoPipe
--CredentialManagerBrowserTest.StoreInUnloadHandler_CrossSite_PreestablishedPipe
-