Remove incorrect warning for zombie streams.

As discussed in cl/324877471, when remove_zombie_stream_ is true, we don't explicitly close all the zombie streams on connection close.

Thus it's totally legal to have zombie streams upon session destruction.

No behavior change. not protected.

PiperOrigin-RevId: 328361752
Change-Id: Ic6d506cd8c8bc3b322a61e06d1688eb657660d00

quic/core/quic_session.cc

diff --git a/quic/core/quic_session.cc b/quic/core/quic_session.cc
index 099b004..dfa0c2c 100644
--- a/quic/core/quic_session.cc
+++ b/quic/core/quic_session.cc
@@ -149,9 +149,6 @@
   if (!remove_zombie_streams_) {
     QUIC_LOG_IF(WARNING, !zombie_streams_.empty())
         << "Still have zombie streams";
-  } else {
-    QUIC_LOG_IF(WARNING, num_zombie_streams_ > 0)
-        << "Still have zombie streams";
   }
 }