Remove Dialog's Close Button's title attribute

Remove Dialog's Close Button's title attribute

I cannot seem to figure out how to get the browser to stop showing 'close' as the tooltip on the close button on a modal Dialog.

I see the title="close" on the button element auto-generated when the Dialog is built.

In Chrome's javascript debugger, I can edit this value at runtime and see the effect in the browser... so I know that this is the correct element to remove the title attribute from.

Since the button does not have anything unique about it, I need to select it as a descendant:

$('div[aria-describedby="myDivName"] button')

This selection works fine.  These do not:

$('div[aria-describedby="myDivName"] button').removeAttr('title');
$('div[aria-describedby="myDivName"] button').removeProp('title');

Please help.