Fixed missing BlankProject

[homapf]

Changes

• Removed creation and deletion of BlankProject on Mac runners

Deleting the BlankProject on cleanup creates the following issue when calling the action multiple times in a row:

Couldn't set project path to: 

Aborting batchmode due to failure:
Couldn't set project path to: 

[Package Manager] Server::Kill -- Server was shutdown
Unclassified error occured while trying to activate license.
Exit code was: 1
Error: There was an error while trying to activate the Unity license.
Error: Build failed with exit code 1

There is no need to create the BlankProject as it already exists in the action.

Successful Workflow Run Link

This only affects self-hosted mac runners. Cannot share a workflow run here unfortunately.

Checklist

• [x] Read the contribution guide and accept the code of conduct
• [x] Docs (If new inputs or outputs have been added or changes to behavior that should be documented. Please make a PR in the documentation repo)
• [x] Readme (updated or not needed)
• [x] Tests (added, updated or not needed)

[github-actions[bot]]