Revert "runtime/pprof: unskip TestTimeVDSO on Android"

This reverts CL 455358, commit 98da0fb4.

Reason for revert: still failing https://build.golang.org/log/c9f13a76069f523b5b4a37a75ec52b30a1f3427a

Change-Id: I8246d233c4fb86781b882f19dea82065cc21bc26
Reviewed-on: https://go-review.googlesource.com/c/go/+/455696


Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>

src/runtime/pprof/pprof_test.go

@@ -2262,6 +2262,11 @@ func TestTimeVDSO(t *testing.T) {
 	// Test that time functions have the right stack trace. In particular,
 	// it shouldn't be recursive.
 
+	if runtime.GOOS == "android" {
+		// Flaky on Android, issue 48655. VDSO may not be enabled.
+		testenv.SkipFlaky(t, 48655)
+	}
+
 	matches := matchAndAvoidStacks(stackContains, []string{"time.now"}, avoidFunctions())
 	p := testCPUProfile(t, matches, func(dur time.Duration) {
 		t0 := time.Now()