Remove a DCHECK that is no longer relevant about sending HTTP/3 GOAWAYs from client to server.

PiperOrigin-RevId: 397848288
diff --git a/quic/core/http/quic_spdy_session.cc b/quic/core/http/quic_spdy_session.cc
index df99714..5ac34fc 100644
--- a/quic/core/http/quic_spdy_session.cc
+++ b/quic/core/http/quic_spdy_session.cc
@@ -759,7 +759,6 @@
 
 void QuicSpdySession::SendHttp3GoAway(QuicErrorCode error_code,
                                       const std::string& reason) {
-  QUICHE_DCHECK_EQ(perspective(), Perspective::IS_SERVER);
   QUICHE_DCHECK(VersionUsesHttp3(transport_version()));
   if (!IsEncryptionEstablished()) {
     QUIC_CODE_COUNT(quic_h3_goaway_before_encryption_established);