MongoDB php driver installed already on Travis with php7.2, pecl install mongodb not working.

Author: danielme85

.travis.yml

@@ -5,7 +5,6 @@ services:
   - mysql
   - mongodb
 before_script:
-  - pecl install mongodb
   - mysql -e 'CREATE DATABASE testing;'
   - composer self-update
   - composer install --no-interaction