Minor cleanup

Change-Id: I0cc37afb0cfa2f8b95da708b9e15b8197471fe14
(cherry picked from commit ad4edd6ab78a5d1f2a71a4275038ef9651934392)
diff --git a/acts/tests/google/ble/system_tests/BleStressTest.py b/acts/tests/google/ble/system_tests/BleStressTest.py
index bfc7caa..79f5a4a 100644
--- a/acts/tests/google/ble/system_tests/BleStressTest.py
+++ b/acts/tests/google/ble/system_tests/BleStressTest.py
@@ -52,6 +52,16 @@
         self.log.debug(pprint.pformat(event))
         return test_result
 
+    def _verify_successful_bond(self, target_address):
+        end_time = time.time() + self.PAIRING_TIMEOUT
+        self.log.info("Verifying devices are bonded")
+        while time.time() < end_time:
+            bonded_devices = self.scn_ad.droid.bluetoothGetBondedDevices()
+            if target_address in {d['address'] for d in bonded_devices}:
+                self.log.info("Successfully bonded to device")
+                return True
+        return False
+
     @BluetoothBaseTest.bt_test_wrap
     def test_loop_scanning_1000(self):
         """Stress start/stop scan instances.
@@ -271,19 +281,6 @@
                                           scan_callback)
         return test_result
 
-    def _verify_successful_bond(self, target_address):
-        end_time = time.time() + self.PAIRING_TIMEOUT
-        self.log.info("Verifying devices are bonded")
-        while time.time() < end_time:
-            bonded_devices = self.scn_ad.droid.bluetoothGetBondedDevices()
-            if target_address in {d['address'] for d in bonded_devices}:
-                self.log.info("Successfully bonded to device")
-                return True
-        return False
-
-    def _get_time_in_milliseconds(self):
-        return int(round(time.time() * 1000))
-
     @BluetoothBaseTest.bt_test_wrap
     def test_le_pairing(self):
         """Test LE pairing transport stress
diff --git a/acts/tests/google/bt/pan/BtPanTest.py b/acts/tests/google/bt/pan/BtPanTest.py
index b86c4f3..26e9bcc 100644
--- a/acts/tests/google/bt/pan/BtPanTest.py
+++ b/acts/tests/google/bt/pan/BtPanTest.py
@@ -29,6 +29,7 @@
 from queue import Empty
 import time
 
+
 class BtPanTest(BluetoothBaseTest):
     def __init__(self, controllers):
         BluetoothBaseTest.__init__(self, controllers)
@@ -89,7 +90,10 @@
         TAGS: Classic, PAN, tethering
         Priority: 1
         """
-        orchestrate_and_verify_pan_connection(self.pan_dut, self.panu_dut)
+        if not orchestrate_and_verify_pan_connection(self.pan_dut,
+                                                     self.panu_dut):
+            self.log.error("Could not establish a PAN connection.")
+            return False
         self.pan_dut.droid.bluetoothPanSetBluetoothTethering(False)
         if verify_http_connection(self.log, self.panu_dut):
             self.log.error("PANU device still has internet access.")