QUIC - removed the EndToEndTest::VerifyCleanConnection suppression.

BUG=366594
R=glider@chromium.org

Review URL: https://codereview.chromium.org/255793002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@266450 0039d316-1c4b-4281-b951-d872f2087c98

tools/valgrind/tsan_v2/suppressions.txt

@@ -251,8 +251,5 @@ race:gfx::ImageFamily::~ImageFamily
 # http://crbug.com/364014
 race:WTF::Latin1Encoding()::globalLatin1Encoding
 
-# http://crbug.com/366594
-race:net::tools::test*EndToEndTest::VerifyCleanConnection
-
 # https://code.google.com/p/v8/issues/detail?id=3143
 race:v8::internal::FLAG_track_double_fields