Remove temporary test branch from workflow for Pester Help Tests

This change simplifies the workflow configuration by removing the unnecessary 'testBranch' entry. This helps maintain clarity and focus on the relevant branches for testing.

Thank you!

Author: jpomfret

.github/workflows/pr.yml

@@ -3,7 +3,6 @@ on:
     branches:
     - main
     - sampler # temporary branch for testing
-    - testBranch # temporary branch for testing
     - develop
     paths-ignore:
     - CHANGELOG.md