Now that we cannot build macosX64 artifacts anymore, remove macos-13 builds.

Author: atsushieno

.github/workflows/build.yml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-24.04, macos-13, macos-14]
+        os: [ubuntu-24.04, macos-14]
     steps:
       - name: checkout
         uses: actions/checkout@v4
@@ -43,19 +43,6 @@ jobs:
           gradlePath: ktmidi-ci-tool/build.gradle.kts
           versionCode: ${{github.run_number}}
 
-      # only for NON-releases on macos-13
-      - name: macos-13 lightweight build with Gradle for libs
-        if: ${{ !startsWith(github.ref, 'refs/tags/') && contains(matrix.os, 'macos-13') }}
-        run: ./gradlew --warning-mode all publishToMavenLocal
-      # only for releases on macos-13
-      - name: macos-13 lightweight publish with Gradle for libs
-        if: ${{ startsWith(github.ref, 'refs/tags/') && contains(matrix.os, 'macos-13') }}
-        run: ./gradlew --no-daemon --warning-mode all publishMacosX64PublicationToMavenCentralRepository publishIosX64PublicationToMavenCentralRepository
-        env:
-          ORG_GRADLE_PROJECT_mavenCentralUsername: ${{ secrets.MAVEN_CENTRAL_USERNAME }}
-          ORG_GRADLE_PROJECT_mavenCentralPassword: ${{ secrets.MAVEN_CENTRAL_PASSWORD }}
-          ORG_GRADLE_PROJECT_signingInMemoryKeyPassword: ${{ secrets.SIGNING_PASSWORD }}
-          ORG_GRADLE_PROJECT_signingInMemoryKey: ${{ secrets.GPG_KEY_CONTENTS }}
       # only for NON-releases on macos-14
       - name: macos-14 lightweight build with Gradle for libs and apps
         if: ${{ !startsWith(github.ref, 'refs/tags/') && contains(matrix.os, 'macos-14') }}