use_M73: false but M73 is still being sent

[luiselse]

Description:

My printer does not support M73:

Send: M73 P100
Recv: echo:Unknown command: "M73 P100"

I disabled in the gui configuration the option "Send M73 Progress Updates"
I confirmed in the config file "use_M73: false"
I rebooted octoprint

but M73 is still being sent to the printer.

Steps to reproduce

• Disable the option use_M73
• Reboot octoprint
• Print something
• Find in the terminal tab in octoprint that the M73 commands are still being sent.

Expected behaviour

• Once the option use_M73 is disables, M73 commands should not be sent

[tpmullan]

Interesting. I will double check this on my printer to see if I get the same results. Feel free to submit a PR if you find the bug.