Drop aarch-darwin specific lines

Author: Defman

.github/workflows/main.yml

@@ -131,18 +131,9 @@ jobs:
           target: ${{ matrix.target }}
           override: true
 
-      - name: aarch64-specific items
-        run: |
-          # Use the beta compiler
-          sudo xcode-select -s /Applications/Xcode_12.2.app/Contents/Developer/
-          # Set SDK environment variables
-          echo "SDKROOT=$(xcrun -sdk macosx11.0 --show-sdk-path)" >> $GITHUB_ENV
-          echo "MACOSX_DEPLOYMENT_TARGET=$(xcrun -sdk macosx11.0 --show-sdk-platform-version)" >> $GITHUB_ENV
-        if: matrix.target == 'aarch64-apple-darwin'
-
       - name: Run cargo build
         uses: actions-rs/cargo@v1
         with:
           use-cross: ${{ matrix.use-cross }}
           command: build
-          args: --target=${{ matrix.target }}
+          args: --target=${{ matrix.target }}