authccl: remove useless noise from test

This test was enabling some logging, without that actually mattering for
the test. Besides being more or less useless, this code is about to
become confusing; I'm separately making the test work in multi-tenant
mode, and there the logging would need to be enabled on a different
server for it to still make any sense. This patch removes it instead.

Release note: None
Epic: None

pkg/ccl/testccl/authccl/auth_test.go

@@ -184,13 +184,7 @@ func jwtRunTest(t *testing.T, insecure bool) {
 			base.TestServerArgs{Insecure: insecure, SocketFile: maybeSocketFile})
 		defer s.Stopper().Stop(context.Background())
 
-		// Enable conn/auth logging.
-		// We can't use the cluster settings to do this, because
-		// cluster settings propagate asynchronously.
 		testServer := s.(*server.TestServer)
-		pgServer := s.(*server.TestServer).PGServer().(*pgwire.Server)
-		pgServer.TestingEnableConnLogging()
-		pgServer.TestingEnableAuthLogging()
 
 		if _, err := conn.ExecContext(context.Background(), fmt.Sprintf(`CREATE USER %s`, username.TestUser)); err != nil {
 			t.Fatal(err)