Remove an obsolete TODO since allowed_device has been deprecated.

PiperOrigin-RevId: 327712468
Change-Id: I3dcb4fe5aafd5073329fa678f871811998650622
diff --git a/tensorflow/compiler/tf2xla/tf2xla.cc b/tensorflow/compiler/tf2xla/tf2xla.cc
index 242a2b0..3cf9df6 100644
--- a/tensorflow/compiler/tf2xla/tf2xla.cc
+++ b/tensorflow/compiler/tf2xla/tf2xla.cc
@@ -137,7 +137,6 @@
       const auto& it = node.attr().find("allowed_devices");
       if (it != node.attr().end()) {
         if (!it->second.list().s().empty()) {
-          // TODO(b/149512838): Support non-empty allowed devices.
           return errors::InvalidArgument(
               "VarHandleOp with non-empty allowed devices is not supported.");
         }