Remove additional Composer require

Author: schlessera

.circleci/config.yml

@@ -20,7 +20,6 @@ jobs:
     - run: |
         echo -e "memory_limit = 1024M" | sudo tee /usr/local/etc/php/php.ini > /dev/null
     - run: |
-        composer require wp-cli/wp-cli:dev-master
         composer install
         mysql -e 'CREATE DATABASE IF NOT EXISTS wp_cli_test;' -uroot -h 127.0.0.1
         mysql -e 'GRANT ALL PRIVILEGES ON wp_cli_test.* TO "wp_cli_test"@"127.0.0.1" IDENTIFIED BY "password1"' -uroot -h 127.0.0.1