Remove environment specification from unity-tests workflow

Author: IvanMurzak

.github/workflows/unity-tests.yml

@@ -9,7 +9,6 @@ jobs:
   testAllModes:
     name: ${{ matrix.unityVersion }} ${{ matrix.testMode }}
     runs-on: ubuntu-latest
-    environment: Test
     strategy:
       fail-fast: false
       matrix: