Don't start the machine after creating it

Let the machine library do it.
crc-org/machine#59

pkg/libvirt/libvirt.go

@@ -324,7 +324,7 @@ func (d *Driver) Create() error {
 		return err
 	}
 
-	return d.Start()
+	return nil
 }
 
 func createImage(src, dst string) error {