Revert env bake-in - handled in build command

Author: Willem Leuverink

.github/workflows/build-php.yml

@@ -145,17 +145,6 @@ jobs:
           ./bin/${{ env.SPC_BINARY }} download --with-php=${{ matrix.version }} --for-extensions "${{ env.PHP_EXTENSIONS }}" --prefer-pre-built --retry=3
           cd ../php-bin
 
-      - name: Bake-in env variables (windows)
-        if: matrix.os == 'windows-latest'
-        run: |
-          set PHPACKER_ENV=production
-        
-      - name: Bake-in env variables (unix)
-        if: matrix.os != 'windows-latest'
-        run: |
-          export PHPACKER_ENV=production
-      
-
       - name: Build PHP
         run: |
           cd ../static-php-cli