gfe-relnote: Remove QUIC version 44.

Deprecate gfe2_reloadable_flag_quic_disable_version_44.

PiperOrigin-RevId: 264686643
Change-Id: Ieceb5805d6a6afdec7f8856884d73f81adf4563b
diff --git a/quic/core/quic_versions.h b/quic/core/quic_versions.h
index 45caa03..f82f300 100644
--- a/quic/core/quic_versions.h
+++ b/quic/core/quic_versions.h
@@ -97,7 +97,7 @@
 
   QUIC_VERSION_43 = 43,  // PRIORITY frames are sent by client and accepted by
                          // server.
-  QUIC_VERSION_44 = 44,  // Use IETF header format.
+  // Version 44 used IETF header format from draft-ietf-quic-invariants-05.
 
   // Version 45 added MESSAGE frame.
 
@@ -200,8 +200,8 @@
 //
 // See go/new-quic-version for more details on how to roll out new versions.
 static const QuicTransportVersion kSupportedTransportVersions[] = {
-    QUIC_VERSION_99, QUIC_VERSION_48, QUIC_VERSION_47, QUIC_VERSION_46,
-    QUIC_VERSION_44, QUIC_VERSION_43, QUIC_VERSION_39,
+    QUIC_VERSION_99, QUIC_VERSION_48, QUIC_VERSION_47,
+    QUIC_VERSION_46, QUIC_VERSION_43, QUIC_VERSION_39,
 };
 
 // This vector contains all crypto handshake protocols that are supported.
@@ -357,7 +357,7 @@
 // Returns true if |transport_version| supports MESSAGE frames.
 QUIC_EXPORT_PRIVATE inline bool VersionSupportsMessageFrames(
     QuicTransportVersion transport_version) {
-  return transport_version > QUIC_VERSION_44;
+  return transport_version >= QUIC_VERSION_46;
 }
 
 // Returns true if QuicSpdyStream encodes body using HTTP/3 specification and