Remove hirak/prestissimo for Composer 2 support

Author: mglaman

.circleci/config.yml

@@ -19,7 +19,6 @@ commands:
       - restore_cache:
           keys:
             - *composer-cache
-      - run: composer global require "hirak/prestissimo:^0.3"
   install-dependencies:
     steps:
       - run: composer install -n --prefer-dist

.travis.yml

@@ -4,6 +4,7 @@ php:
   - "7.3"
   - "7.4"
 
+before_install: []
 install:
   - composer install --no-interaction
   - COMPOSER_MEMORY_LIMIT=-1 composer create-project drupal-composer/drupal-project:8.x-dev $TRAVIS_BUILD_DIR/../drupal --no-interaction --no-progress