Fixed: remove the "preload" component, and do not preload the period's json

This didn't accelerated the loading of period's pages, and make the period's json loaded twice.

composer.json

@@ -52,7 +52,6 @@
         "symfony/translation": "^4.4",
         "symfony/twig-bundle": "^4.4",
         "symfony/validator": "^4.4",
-        "symfony/web-link": "*",
         "symfony/webpack-encore-bundle": "^1.11",
         "symfony/workflow": "^4.4",
         "symfony/yaml": "^4.4",

src/Bundle/ChillPersonBundle/Resources/views/AccompanyingCourse/layout.html.twig

@@ -1,9 +1,5 @@
 {% extends "@ChillMain/layoutWithVerticalMenu.html.twig" %}
 
-{% block head_custom %}
-<link rel="preload" href="{{ preload(path('chill_api_single_accompanying_course__entity', {'id': accompanyingCourse.id, '_format': 'json' }), {as: 'fetch'}) }}" as="fetch" />
-{% endblock %}
-
 {% block top_banner %}
     {{ include('@ChillPerson/AccompanyingCourse/banner.html.twig', { title: block('title') }) }}
 {% endblock %}