VOL-2857 - remove defaults for device create

Change-Id: I4492e30c47244a8a34247645ea5fe7279d95deb2
diff --git a/internal/pkg/commands/devices.go b/internal/pkg/commands/devices.go
index 24e3554..aefacfb 100644
--- a/internal/pkg/commands/devices.go
+++ b/internal/pkg/commands/devices.go
@@ -48,8 +48,8 @@
 }
 
 type DeviceCreate struct {
-	DeviceType  string `short:"t" long:"devicetype" default:"simulated_olt" description:"Device type"`
-	MACAddress  string `short:"m" long:"macaddress" default:"00:0c:e2:31:40:00" description:"MAC Address"`
+	DeviceType  string `short:"t" long:"devicetype" default:"" description:"Device type"`
+	MACAddress  string `short:"m" long:"macaddress" default:"" description:"MAC Address"`
 	IPAddress   string `short:"i" long:"ipaddress" default:"" description:"IP Address"`
 	HostAndPort string `short:"H" long:"hostandport" default:"" description:"Host and port"`
 }