runtime: disable TestNotInGoMetricCallback on FreeBSD + race

cgo + race is not supported on FreeBSD.

Change-Id: I38abeccaaabfcc104d1d5a077fb99646dc4be792
Reviewed-on: https://go-review.googlesource.com/c/go/+/728120
Auto-Submit: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>

src/runtime/metrics_test.go

@@ -9,6 +9,7 @@ import (
 	"internal/abi"
 	"internal/goexperiment"
 	"internal/profile"
+	"internal/race"
 	"internal/testenv"
 	"os"
 	"reflect"
@@ -1589,6 +1590,10 @@ func TestNotInGoMetricCallback(t *testing.T) {
 	switch runtime.GOOS {
 	case "windows", "plan9":
 		t.Skip("unsupported on Windows and Plan9")
+	case "freebsd":
+		if race.Enabled {
+			t.Skipf("race + cgo freebsd not supported. See https://go.dev/issue/73788.")
+		}
 	}
 
 	// This test is run in a subprocess to prevent other tests from polluting the metrics

src/runtime/testdata/testprogcgo/notingo.go

@@ -3,7 +3,6 @@
 // license that can be found in the LICENSE file.
 
 //go:build !plan9 && !windows
-// +build !plan9,!windows
 
 package main