Fix VTS generated test with reusable execution.

Fixes: 273819843
Bug: 273885128
Test: NNAPI VTS
Change-Id: Ib684cea0686659a96afa6d181900edf7508da12b
diff --git a/neuralnetworks/aidl/vts/functional/GeneratedTestHarness.cpp b/neuralnetworks/aidl/vts/functional/GeneratedTestHarness.cpp
index dcf8451..e344458 100644
--- a/neuralnetworks/aidl/vts/functional/GeneratedTestHarness.cpp
+++ b/neuralnetworks/aidl/vts/functional/GeneratedTestHarness.cpp
@@ -736,8 +736,8 @@
                     // If a sync fence is returned, try start another run waiting for the sync
                     // fence.
                     if (testConfig.reusable) {
-                        ret = execution->executeFenced(waitFor, kNoDeadline, kNoDuration,
-                                                       &executionResult);
+                        // Nothing to do because at most one execution may occur on a reusable
+                        // execution object at any given time.
                     } else if (testConfig.useConfig) {
                         ret = preparedModel->executeFencedWithConfig(
                                 request, waitFor,