VOL-1577 - General cleanup (gofmt, go vet, go test, dep check)

Change-Id: I536b2746b8bd266f3e75aeccc65bfe7468f1b44a
diff --git a/ro_core/core/device_manager.go b/ro_core/core/device_manager.go
index 9e67b72..f3a1f6c 100644
--- a/ro_core/core/device_manager.go
+++ b/ro_core/core/device_manager.go
@@ -176,7 +176,7 @@
 	if agent := dMgr.getDeviceAgent(deviceId); agent != nil {
 		return agent, nil
 	}
-	return nil, status.Error(codes.NotFound, deviceId)  // This should nto happen
+	return nil, status.Error(codes.NotFound, deviceId) // This should nto happen
 }
 
 // loadRootDeviceParentAndChildren loads the children and parents of a root device in memory
@@ -393,4 +393,3 @@
 	}
 	return childDeviceIds, nil
 }
-