remove old validation docs, fixes #23217

diff --git a/docs/4.0/components/forms.md b/docs/4.0/components/forms.md
index 1ae5c81f3b8232ca56a5c643daedb449c4c44d0d..22c06b923f4a5f16011422649d3da56409ba0e9b 100644 (file)
--- a/docs/4.0/components/forms.md
+++ b/docs/4.0/components/forms.md
@@ -957,34 +957,6 @@ Custom checkboxes and radios can also be disabled. Add the `disabled` boolean at
 </label>
 {% endexample %}
 
-#### Validation states
-
-Add other states to your custom forms with our validation classes.
-
-{% example html %}
-<div class="form-group has-success">
-  <label class="custom-control custom-checkbox">
-    <input type="checkbox" class="custom-control-input">
-    <span class="custom-control-indicator"></span>
-    <span class="custom-control-description">Check this custom checkbox</span>
-  </label>
-</div>
-<div class="form-group has-warning">
-  <label class="custom-control custom-checkbox">
-    <input type="checkbox" class="custom-control-input">
-    <span class="custom-control-indicator"></span>
-    <span class="custom-control-description">Check this custom checkbox</span>
-  </label>
-</div>
-<div class="form-group has-danger mb-0">
-  <label class="custom-control custom-checkbox">
-    <input type="checkbox" class="custom-control-input">
-    <span class="custom-control-indicator"></span>
-    <span class="custom-control-description">Check this custom checkbox</span>
-  </label>
-</div>
-{% endexample %}
-
 #### Stacked
 
 Custom checkboxes and radios are inline to start. Add a parent with class `.custom-controls-stacked` to ensure each form control is on separate lines.