Replace some PQuery/PExecute by more simple Query/Execute

Original patch by hunuza, extended to whole code
Closses issue 1446

--HG--
branch : trunk

src/game/World.cpp

@@ -1278,7 +1278,7 @@ void World::SetInitialWorldSettings()
     loginDatabase.PExecute("UPDATE realmlist SET icon = %u, timezone = %u WHERE id = '%d'", server_type, realm_zone, realmID);
 
     ///- Remove the bones after a restart
-    CharacterDatabase.PExecute("DELETE FROM corpse WHERE corpse_type = '0'");
+    CharacterDatabase.Execute("DELETE FROM corpse WHERE corpse_type = '0'");
 
     ///- Load the DBC files
     sLog.outString("Initialize data stores...");