Remove the no longer used kPACE connection option. No functional change.

net/quic/quic_utils_test.cc

Index: net/quic/quic_utils_test.cc
diff --git a/net/quic/quic_utils_test.cc b/net/quic/quic_utils_test.cc
index d741abb8f91c0874ffb02cf6fd4ef84cb021061a..1a3a1e58308bc5e836e6165ae5eb2b338bfaa215 100644
--- a/net/quic/quic_utils_test.cc
+++ b/net/quic/quic_utils_test.cc
@@ -88,10 +88,9 @@ TEST(QuicUtilsTest, ParseQuicConnectionOptions) {
   QuicTagVector empty_options = QuicUtils::ParseQuicConnectionOptions("");
   EXPECT_EQ(0ul, empty_options.size());
 
-  QuicTagVector parsed_options = QuicUtils::ParseQuicConnectionOptions(
-      "PACE,TIMER,TBBR,REJ");
+  QuicTagVector parsed_options =
+      QuicUtils::ParseQuicConnectionOptions("TIMER,TBBR,REJ");
   QuicTagVector expected_options;
-  expected_options.push_back(kPACE);
   expected_options.push_back(kTIME);
   expected_options.push_back(kTBBR);
   expected_options.push_back(kREJ);