remove matlab install from workflow

Author: oliverchampion

.github/workflows/unit_test.yml

@@ -1,8 +1,10 @@
 name: Unit tests
+
 on: [push, pull_request]
 
 jobs:
   build:
+
     runs-on: ${{ matrix.os }}
     continue-on-error: false
     strategy:
@@ -13,40 +15,21 @@ jobs:
         exclude:
           - os: windows-latest
             python-version: "3.13"
-
+        # Windows chokes on py3.13: https://github.com/numpy/numpy/issues/27894
     steps:
       - uses: actions/checkout@v4
-
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
           cache: 'pip'
-
+      # You can test your matrix by printing the current Python version
       - name: Display Python version
         run: python -c "import sys; print(sys.version)"
-
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
           pip install -r requirements.txt
-
-      - name: Set env var for MATLAB on macOS
-        if: runner.os == 'macOS'
-        run: echo "DYLD_LIBRARY_PATH=/Users/runner/hostedtoolcache/MATLAB/2025.1.999/arm64/MATLAB.app/bin/maca64:$DYLD_LIBRARY_PATH" >> $GITHUB_ENV
-
-      - name: Set env var for MATLAB on Linux
-        if: runner.os == 'Linux'
-        run: echo "LD_LIBRARY_PATH=/opt/hostedtoolcache/MATLAB/2025.1.999/x64/bin/glnxa64:$LD_LIBRARY_PATH" >> $GITHUB_ENV
-
-      - name: Set up MATLAB
-        uses: matlab-actions/setup-matlab@v2
-        with:
-          release: R2025a 
-
-      - name: Install MATLAB Engine for Python
-        run: python -m pip install matlabengine==25.1.2
-
       - name: Test with pytest
         run: |
           pip install pytest pytest-cov