Revert of bluetooth: Implement simulateGATTConnectionResponse()

device/bluetooth/test/fake_central.cc

Index: device/bluetooth/test/fake_central.cc
diff --git a/device/bluetooth/test/fake_central.cc b/device/bluetooth/test/fake_central.cc
index 2b11378a0632d77dce5e3fe74afe4bbb88cd684a..8bc994fffc81a9d12eeb2afab8b46d8fb2581fbe 100644
--- a/device/bluetooth/test/fake_central.cc
+++ b/device/bluetooth/test/fake_central.cc
@@ -37,27 +37,11 @@
   FakePeripheral* fake_peripheral =
       static_cast<FakePeripheral*>(device_iter->second.get());
   fake_peripheral->SetName(name);
-  fake_peripheral->SetSystemConnected(true);
+  fake_peripheral->SetGattConnected(true);
   fake_peripheral->SetServiceUUIDs(device::BluetoothDevice::UUIDSet(
       known_service_uuids.begin(), known_service_uuids.end()));
 
   std::move(callback).Run();
-}
-
-void FakeCentral::SetNextGATTConnectionResponse(
-    const std::string& address,
-    uint16_t code,
-    SetNextGATTConnectionResponseCallback callback) {
-  auto device_iter = devices_.find(address);
-  if (device_iter == devices_.end()) {
-    std::move(callback).Run(false);
-    return;
-  }
-
-  FakePeripheral* fake_peripheral =
-      static_cast<FakePeripheral*>(device_iter->second.get());
-  fake_peripheral->SetNextGATTConnectionResponse(code);
-  std::move(callback).Run(true);
 }
 
 std::string FakeCentral::GetAddress() const {