Restore automatic quotation marks replacement in wxOSX wxTextCtrl.

This was disabled by 262ed2c133 but doesn't seem
to be justified, we shouldn't be overriding native platform behaviour without a
very good reason and there doesn't seem to be any.

See #16805.

src/osx/cocoa/textctrl.mm

@@ -583,7 +583,6 @@ wxNSTextViewControl::wxNSTextViewControl( wxTextCtrl *wxPeer, WXWidget w )
     if ( !wxPeer->HasFlag(wxTE_RICH | wxTE_RICH2) )
     {
         [tv setRichText:NO];
-        [tv setAutomaticQuoteSubstitutionEnabled:NO];
     }
 
     [m_scrollView setDocumentView: tv];