Convert radios on clear cache page (basic)

app/main/forms.py

@@ -2272,7 +2272,7 @@ class TemplateAndFoldersSelectionForm(Form):
 
 
 class ClearCacheForm(StripWhitespaceForm):
-    model_type = RadioField(
+    model_type = GovukRadiosField(
         'What do you want to clear today',
     )
 

app/templates/views/platform-admin/clear-cache.html

@@ -1,6 +1,5 @@
 {% extends "views/platform-admin/_base_template.html" %}
 {% from "components/form.html" import form_wrapper %}
-{% from "components/radios.html" import radios %}
 {% from "components/page-footer.html" import page_footer %}
 
 {% block per_page_title %}
@@ -14,7 +13,7 @@
   </h1>
 
   {% call form_wrapper() %}
-    {{ radios(form.model_type) }}
+    {{ form.model_type }}
     {{ page_footer('Clear') }}
   {% endcall %}