Update brainmapper to match cellfinder release candidate (#113)

* Update prep_model_weights to match cellfinder

* Set the backend for torch testing

* Fixed linting

* Move keras import inot set_device function

* Set GIHTUB_ACTIONS env variable to true when testing

* Added yield statement to not return set_device_arm until after all tests done

* Switched to using pytest_sessionstart instead of an autouse fixture

* Fixed linting

* Remove any changes relating to fixing macOS latest and PyTorch

.github/workflows/test_and_deploy.yml

@@ -30,6 +30,8 @@ jobs:
     needs: [linting, manifest]
     name: ${{ matrix.os }} py${{ matrix.python-version }}
     runs-on: ${{ matrix.os }}
+    env:
+      KERAS_BACKEND: torch
     strategy:
       fail-fast: false
       matrix:

brainglobe_workflows/brainmapper/main.py

@@ -154,7 +154,6 @@ def run_all(args, what_to_run, atlas):
             args.model_weights,
             args.install_path,
             args.model,
-            args.n_free_cpus,
         )
         if what_to_run.classify:
             if points is None: