[Clean up] Expose ConnectToServiceInsecurely as a BluetoothDevice API on all platforms.

components/proximity_auth/bluetooth_util.cc

Index: components/proximity_auth/bluetooth_util.cc
diff --git a/components/proximity_auth/bluetooth_util.cc b/components/proximity_auth/bluetooth_util.cc
index 405dd235281e6695a43dda052ef9ab57f3288c5c..27b377c3b5dc2f3a22e2644e8d949f5465f2e0a6 100644
--- a/components/proximity_auth/bluetooth_util.cc
+++ b/components/proximity_auth/bluetooth_util.cc
@@ -8,8 +8,6 @@
 
 #include "base/callback.h"
 
-using device::BluetoothDevice;
-
 namespace proximity_auth {
 namespace bluetooth_util {
 namespace {
@@ -23,14 +21,6 @@ void SeekDeviceByAddress(const std::string& device_address,
   error_callback.Run(kApiUnavailable);
 }
 
-void ConnectToServiceInsecurely(
-    BluetoothDevice* device,
-    const device::BluetoothUUID& uuid,
-    const BluetoothDevice::ConnectToServiceCallback& callback,
-    const BluetoothDevice::ConnectToServiceErrorCallback& error_callback) {
-  error_callback.Run(kApiUnavailable);
-}
-
 }  // namespace bluetooth_util
 }  // namespace proximity_auth