Remove jQuery from docs/repo.

Some of the snippets need to be updated later.

site/docs/4.3/components/modal.md

@@ -498,7 +498,7 @@ Utilize the Bootstrap grid system within a modal by nesting `.container-fluid` w
 
 ### Varying modal content
 
-Have a bunch of buttons that all trigger the same modal with slightly different contents? Use `event.relatedTarget` and [HTML `data-*` attributes](https://developer.mozilla.org/en-US/docs/Learn/HTML/Howto/Use_data_attributes) (possibly [via jQuery](https://api.jquery.com/data/)) to vary the contents of the modal depending on which button was clicked.
+Have a bunch of buttons that all trigger the same modal with slightly different contents? Use `event.relatedTarget` and [HTML `data-*` attributes](https://developer.mozilla.org/en-US/docs/Learn/HTML/Howto/Use_data_attributes) to vary the contents of the modal depending on which button was clicked.
 
 Below is a live demo followed by example HTML and JavaScript. For more information, [read the modal events docs](#events) for details on `relatedTarget`.
 
@@ -542,8 +542,9 @@ Below is a live demo followed by example HTML and JavaScript. For more informati
 $('#exampleModal').on('show.bs.modal', function (event) {
   var button = $(event.relatedTarget) // Button that triggered the modal
   var recipient = button.data('whatever') // Extract info from data-* attributes
-  // If necessary, you could initiate an AJAX request here (and then do the updating in a callback).
-  // Update the modal's content. We'll use jQuery here, but you could use a data binding library or other methods instead.
+  // If necessary, you could initiate an AJAX request here
+  // and then do the updating in a callback.
+  // Update the modal's content.
   var modal = $(this)
   modal.find('.modal-title').text('New message to ' + recipient)
   modal.find('.modal-body input').val(recipient)