Issue #3361983 by effulgentsia, smustgrave: Remove psr/http-message from drupal/core-recommended

    }

    // Make a list of packages we do not want to put in the 'require' section.

    $remove_list = ['drupal/core', 'wikimedia/composer-merge-plugin', 'composer/installers'];

    $remove_list = [

      'drupal/core',

      'wikimedia/composer-merge-plugin',

      'composer/installers',

      // This package contains no code other than interfaces, so allow sites

      // to use any compatible version without needing to switch off of

      // drupal/core-recommended.

      'psr/http-message',

    ];

    // Copy the 'packages' section from the Composer lock into our 'require'

    // section. There is also a 'packages-dev' section, but we do not need

        "psr/event-dispatcher": "~1.0.0",

        "psr/http-client": "~1.0.2",

        "psr/http-factory": "~1.0.2",

        "psr/http-message": "~2.0",

        "psr/log": "~3.0.0",

        "ralouphie/getallheaders": "~3.0.3",

        "sebastian/diff": "~4.0.4",