Remove santoni from q dev builds
- /e/ version: ~q
- Device model(s): ~santoni
## Summary
Remove ~santoni from ~q builds
## The problem
**Steps to reproduce**
Run a ~q dev build for ~santoni
**What is the current behavior?**
<What actually happens>
The build fails
Job [#177022](https://gitlab.e.foundation/e/priv/os/build/-/jobs/177022) failed.
**What is the expected correct behavior?**
<What you should see instead>
The build succeeds
## Technical informations
Upstream (LineageOS), there is no support for ~santoni after ~pie
https://github.com/LineageOS/android_device_xiaomi_santoni
We shouldnt be trying to build ~q
## Solutions
**Workaround**
- [x] Remove santoni from ~q builds
- [x] Verify santoni in ~pie build list
- [x] Verify the documentation accordingly
- [x] Verify images.ecloud.global accordingly
issue