Finally remove annoying firmware check log line for non-UM3 printers

plugins/FirmwareUpdateChecker/FirmwareUpdateChecker.py

@@ -49,7 +49,6 @@ class FirmwareUpdateChecker(Extension):
     def _onContainerAdded(self, container):
         # Only take care when a new GlobalStack was added
         if isinstance(container, GlobalStack):
-            Logger.log("i", "You have a '%s' in printer list. Let's check the firmware!", container.getId())
             self.checkFirmwareVersion(container, True)
 
     ##  Connect with software.ultimaker.com, load latest.version and check version info.

plugins/FirmwareUpdateChecker/FirmwareUpdateCheckerJob.py

@@ -44,6 +44,8 @@ class FirmwareUpdateCheckerJob(Job):
             # Now we just do that if the active printer is Ultimaker 3 or Ultimaker 3 Extended or any
             # other Ultimaker 3 that will come in the future
             if len(machine_name_parts) >= 2 and machine_name_parts[:2] == ["ultimaker", "3"]:
+                Logger.log("i", "You have a UM3 in printer list. Let's check the firmware!")
+
                 # Nothing to parse, just get the string
                 # TODO: In the future may be done by parsing a JSON file with diferent version for each printer model
                 current_version = reader(current_version_file).readline().rstrip()