tdf#42949 Fix IWYU warnings in include/xmlreader/*

Found with bin/find-unneeded-includes
Only removal proposals are dealt with here.

Change-Id: Ie96f3c739d4b3654d60888e01f3a8a70c18d25cf
Reviewed-on: https://gerrit.libreoffice.org/58824
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>

include/xmlreader/xmlreader.hxx

@@ -25,8 +25,6 @@
 #include <stack>
 #include <vector>
 
-#include <com/sun/star/container/NoSuchElementException.hpp>
-#include <com/sun/star/uno/RuntimeException.hpp>
 #include <osl/file.h>
 #include <rtl/ustring.hxx>
 #include <sal/types.h>