The installer had a fallback that tried to copy the sensor-proxy binary from
inside the Pulse container using `pct pull`. However, the paths it tried
(/opt/pulse/bin/pulse-sensor-proxy-linux-amd64) don't exist in Pulse containers.
When pct pull fails, Proxmox logs a task error visible in the UI, even though
the error is harmless and expected. This caused recurring "TASK ERROR: failed
to open /opt/pulse/bin/pulse-sensor-proxy-linux-amd64: No such file or directory"
messages every time the selfheal timer ran and couldn't download from GitHub.
The pct pull approach was never going to succeed for LXC-installed Pulse instances
since the binary doesn't exist at those paths inside the container. Removing it
eliminates the spurious error messages.
Related to #817
5b7445f758