[DOCS] [Broken-Link] Missing pretrained-model inference

[rozeappletree]

Broken link: https://solaris.readthedocs.io/en/latest/tutorials/notebooks/api_inference_spacenet.ipynb

At https://solaris.readthedocs.io/en/latest/tutorials/#

[rbavery]

in the future release 0.5.0, solaris will not support inference. this is better managed by other ml packages. see https://github.com/CosmiQ/solaris/blob/0.5.0/ROADMAP.md

I'll close once 0.5.0 is merged and the docs are fixed without broken links.