delete timesheets via api (#776)

templates/timesheet/delete.html.twig

@@ -1,17 +0,0 @@
-{% extends app.request.xmlHttpRequest ? 'form.html.twig' : 'base.html.twig' %}
-{% import "macros/actions.html.twig" as actions %}
-
-{% block page_title %}{{ 'timesheet.title'|trans }}{% endblock %}
-{% block page_subtitle %}{{ 'timesheet.subtitle'|trans }}{% endblock %}
-{% block page_actions %}{{ actions.timesheet(timesheet, 'delete') }}{% endblock %}
-
-{% block main %}
-
-    {{ include(app.request.xmlHttpRequest ? 'default/_form_delete_modal.html.twig' : 'default/_form_delete.html.twig', {
-        'message': "delete.not_in_use"|trans|raw,
-        'form': form,
-        'used': false,
-        'back': path('timesheet')
-    }) }}
-
-{% endblock %}