Cleaned up GitHub Actions configuration.

Deleted the do-nothing placeholders for installing
the Kotlin Native compiler. We are not going to support
Kotlin Native for now.

Removed redundant installation of pylint from the
Windows commit_hook.bat.

Other batch file cleanup, now that I know "||" works in Windows.

.github/workflows/astronomy-engine-tests.yml

@@ -35,18 +35,12 @@ jobs:
       uses: actions/setup-java@v1
       with:
         java-version: 1.8
-    - name: Install Kotlin Native compiler Linux
-      if: startsWith(matrix.os, 'ubuntu')
-      run: generate/install_kotlin_native 'https://github.com/JetBrains/kotlin/releases/download/v1.6.20/kotlin-native-linux-x86_64-1.6.20.tar.gz'
     - uses: gradle/wrapper-validation-action@v1
+
     - name: Test Astronomy Engine Linux
       if: startsWith(matrix.os, 'ubuntu')
       run: cd generate && rm -f output/vsop*.txt output/*.eph output/jupiter_moons.txt && ./run && ./verify_clean
 
-    - name: Install Kotlin Native compiler macOs
-      if: startsWith(matrix.os, 'macOS')
-      run: generate/install_kotlin_native 'https://github.com/JetBrains/kotlin/releases/download/v1.6.20/kotlin-native-macos-x86_64-1.6.20.tar.gz'
-    - uses: gradle/wrapper-validation-action@v1
     - name: Test Astronomy Engine macOs
       if: startsWith(matrix.os, 'macOS')
       run: cd generate && rm -f output/vsop*.txt output/*.eph output/jupiter_moons.txt && ./run && ./verify_clean

generate/commit_hook.bat

@@ -8,28 +8,18 @@ REM Change to project/repo root directory.
 cd %~dp0\..
 echo.commit_hook: Repo root = %cd%
 
-echo.commit_hook: Installing Python linter.
-python -m pip install --upgrade pip
-if errorlevel 1 (exit /b 1)
-pip install pylint
-if errorlevel 1 (exit /b 1)
-
 echo.commit_hook: Installing Doxygen.
 md bin
 cd bin
-curl -o doxygen.zip https://www.doxygen.nl/files/doxygen-1.9.3.windows.x64.bin.zip
-if errorlevel 1 (exit /b 1)
-7z x doxygen.zip
-if errorlevel 1 (exit /b 1)
+curl -o doxygen.zip https://www.doxygen.nl/files/doxygen-1.9.3.windows.x64.bin.zip || exit /b 1
+7z x doxygen.zip || exit /b 1
 del doxygen.zip
 
 REM change to 'generate' directory, which is where this batch file is located.
 cd %~dp0
 echo.commit_hook: Running Astronomy Engine tests.
 del output\vsop*.txt output\*.eph output\jupiter_moons.txt
-call run.bat
-if errorlevel 1 (exit /b 1)
-call verify_clean.bat
-if errorlevel 1 (exit /b 1)
+call run.bat || exit /b 1
+call verify_clean.bat || exit /b 1
 echo.commit_hook: SUCCESS
 exit /b 0