Turn on sandboxing for external/perfetto

Contingent on aosp/2788322

Test: GENRULE_SANDBOXING=true m libperfetto_client_experimental # bit
identical

Change-Id: I885f420850a165f042b94685e7cf1215d5620716
diff --git a/genrule/allowlists.go b/genrule/allowlists.go
index 8552173..b3c662d 100644
--- a/genrule/allowlists.go
+++ b/genrule/allowlists.go
@@ -261,7 +261,6 @@
 		// go/keep-sorted start
 		"art/test",
 		"external/cronet",
-		"external/perfetto",
 		// go/keep-sorted end
 	}
 )