Remove old non relevant comment

The code that the comment is talking about was removed by the commit:
fb6edeb2
Let's remove the comment to spare our selfs from confusion

Change-Id: I7bdefb0ead5139be009bfb8dd7d9ad7c6821e3e8
Reviewed-on: https://gerrit.libreoffice.org/22120Reviewed-by: jan iversen <jani@documentfoundation.org>
Tested-by: jan iversen <jani@documentfoundation.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

vcl/osx/a11ywrapper.mm

@@ -1127,10 +1127,6 @@ Reference < XAccessibleContext > hitTestRunner ( css::awt::Point point,
     return [self window];
 }
 
-// These four are for AXTextAreas only. They are needed, because bold and italic
-// attributes have to be bound to a font on the Mac. Our UNO-API instead handles
-// and reports them independently. When they occur we bundle them to a font with
-// this information here to create a according NSFont.
 -(void)setActsAsRadioGroup:(BOOL)actsAsRadioGroup {
     mActsAsRadioGroup = actsAsRadioGroup;
 }