weaved: Fix a typo in libweaved/device.cc

Device::OnManagerRemoved was passed to CommandRemovedCallback instead
of ManagerRemovedCallback. Stupid copy-paste problems.

BUG: 25813877
Change-Id: Iafbdf9ad43c8008d4aff489b7f9ea358c263a31f
diff --git a/libweaved/device.cc b/libweaved/device.cc
index 1c97233..02bacb6 100644
--- a/libweaved/device.cc
+++ b/libweaved/device.cc
@@ -33,7 +33,7 @@
       base::Bind(&Device::OnCommandRemoved, base::Unretained(this)));
   weaved_object_mgr_->SetManagerAddedCallback(
       base::Bind(&Device::OnManagerAdded, base::Unretained(this)));
-  weaved_object_mgr_->SetCommandRemovedCallback(
+  weaved_object_mgr_->SetManagerRemovedCallback(
       base::Bind(&Device::OnManagerRemoved, base::Unretained(this)));
 }