remove unused function with a bug in it. fix an unused variable warning

include/libtorrent/piece_picker.hpp

@@ -466,8 +466,7 @@ namespace libtorrent
 			void set_not_have() { index = 0; TORRENT_ASSERT(!have()); }
 			
 			bool filtered() const { return piece_priority == filter_priority; }
-			void filtered(bool f) { piece_priority = f ? filter_priority : 0; }
-			
+
 			//  prio 7 is always top priority
 			//  prio 0 is always -1 (don't pick)
 			//  downloading pieces are always on an even prio_factor priority

src/policy.cpp

@@ -904,7 +904,9 @@ namespace libtorrent
 //			|| (iter != m_peers.end() && c.remote().address() < (*iter)->address())
 //			|| (iter != m_peers.end() && iter != m_peers.begin() && (*(iter-1))->address() < c.remote().address()));
 
+#if !defined TORRENT_DISABLE_GEO_IP || TORRENT_LOGGING || defined TORRENT_VERBOSE_LOGGING
 		aux::session_impl& ses = m_torrent->session();
+#endif
 
 		if (found)
 		{