Remove unused, broken operator<< for PolyPolygon

...which apparently wants to internally call some operator<< for Polygon
(rPolyPoly.GetObject(i)), but which doesn't exist (and appears to not have
existed when this operator<< for PolyPolygon was added with
e4be770e "add std::ostream operators for Region
and PolyPolygon"), so uses the non-explicit PolyPolygon ctor that takes a
Polygon, and causes infinite recursion for any non-empty PolyPolygon

Change-Id: I308527dcfed18763c8c3ebbce823eea9a0340e70
Reviewed-on: https://gerrit.libreoffice.org/73388
Tested-by: Jenkins
Reviewed-by: Michael Stahl <Michael.Stahl@cib.de>

include/tools/poly.hxx

@@ -265,18 +265,6 @@ public:
 
 typedef std::vector< tools::PolyPolygon > PolyPolyVector;
 
-
-template<typename charT, typename traits>
-inline std::basic_ostream<charT, traits> & operator <<(
-    std::basic_ostream<charT, traits> & stream, const tools::PolyPolygon& rPolyPoly)
-{
-    if (!rPolyPoly.Count())
-        stream << "EMPTY";
-    for (sal_uInt16 i = 0; i < rPolyPoly.Count(); ++i)
-        stream << "[" << i << "] " << rPolyPoly.GetObject(i);
-    return stream;
-}
-
 #endif
 
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