Remove incorrect dep install commands for Docker ctr img

[ethanjli]

The Docker container images are being built in a way that results in different behavior between native Python installations (via UV) and the Docker container. @beniroquai hypothesized that the command removed by this PR is the culprit.

[ethanjli]

@beniroquai FYI the problem is still occurring after this PR; I'm still seeing ERROR [RS232sManager -> MultiManager] Numba needs NumPy 2.3 or less. Got NumPy 2.4. in the logs; and I'm still not seeing a printout of the contents of example_virtual_microscope in the logs.

[beniroquai]

Is this still relevant?

[ethanjli]

Yes, this is still a problem. In ghcr.io/openuc2/imswitch:sha-4896268 (from 4896268, running on the base OS image built by openUC2/os-rpi@c373bb9):

• I am still seeing these "ERROR [RS232sManager -> MultiManager] Numba needs NumPy 2.3 or less. Got NumPy 2.4." messages.
• The logs include a printout of the contents of imcontrol_options.json (which uses example_virtual_microscope.json as its setupFileName) and I never see a printout of the contents of imcontrol_options.json.
• When I open ImSwitch's LiveView, the camera stream never loads. Instead, I only see "Loading image..." followed by "Stream nicht aktiv".