BUG: Stop GUI from opening twice from `ligthpath` command

[tangkong]

Description

Only run entrypoint once when running the lightpath command from the cli entrypoint.

This is a workaround, honestly. I'm ok with this not being merged until we figure out exactly what's going on, maybe this is just a me problem

Motivation and Context

GUI was opening twice when running the command lightpath from the cli.

For my own understanding:

• The python -m option runs the __main__.py file
  • This only runs entrypoint() once, as desired.
• The entrypoint 'console_scripts': ['lightpath = lightpath.main:entrypoint'] imports and runs lightpath.main.entrypoint.
  • For some reason this imports __main__.py before running entrypoint, which by all means it shouldn't....
  • I can't figure out why this is the case, and the structure of our entrypoint matches our other packages. Those other packages don't run __main__.py when using the cli entrypoint.

(pcds-5.4.2)roberttk@psbuild-rhel7-01:~$ lightpath --sim
running file __main__.py, with name: lightpath.__main__
running file main.py, with name: lightpath.main
entrypoint
[2022-08-15 11:16:58] - INFO -  Launching LCLS Lightpath ...
<... clip ...>
entrypoint
[2022-08-15 11:17:10] - INFO -  Launching LCLS Lightpath ...
(pcds-5.4.2)roberttk@psbuild-rhel7-01:~$ python -m lightpath --sim
running file __main__.py, with name: __main__
running file main.py, with name: lightpath.main
entrypoint
[2022-08-15 11:17:24] - INFO -  Launching LCLS Lightpath ...
<... clip ...>
(pcds-5.4.2)roberttk@psbuild-rhel7-01:~$ 

How Has This Been Tested?

Interactively. Both lightpath and python -m lightpath work

Where Has This Been Documented?

This PR

[tangkong]

This was an env issue, old entrypoints being carried over in the prod env