Remove "Order" field hack (partly reverts da1a89fc)

eeschema/sch_screen.cpp

@@ -967,36 +967,10 @@ void SCH_SCREEN::GetSheets( std::vector<SCH_ITEM*>* aItems )
     std::sort( aItems->begin(), aItems->end(),
             []( EDA_ITEM* a, EDA_ITEM* b ) -> bool
             {
-                long a_order = 0;
-                long b_order = 0;
-
-                for( const SCH_FIELD& field : static_cast<SCH_SHEET*>( a )->GetFields() )
-                {
-                    if( field.GetName().CmpNoCase( wxT( "Order" ) ) == 0 )
-                    {
-                        field.GetText().ToLong( &a_order );
-                        break;
-                    }
-                }
-
-                for( const SCH_FIELD& field : static_cast<SCH_SHEET*>( b )->GetFields() )
-                {
-                    if( field.GetName().CmpNoCase( wxT( "Order" ) ) == 0 )
-                    {
-                        field.GetText().ToLong( &b_order );
-                        break;
-                    }
-                }
-
-                if( a_order == b_order )
-                {
-                    if( a->GetPosition().x == b->GetPosition().x )
-                        return a->GetPosition().y < b->GetPosition().y;
-
+                if( a->GetPosition().x == b->GetPosition().x )
+                    return a->GetPosition().y < b->GetPosition().y;
+                else
                     return a->GetPosition().x < b->GetPosition().x;
-                }
-
-                return a_order < b_order;
             } );
 }
 

eeschema/sch_screen.h

@@ -412,7 +412,7 @@ public:
     void GetHierarchicalItems( std::vector<SCH_ITEM*>* aItems );
 
     /**
-     * Similar to GetItems().OfType( SCH_SHEET_T ), but return the sheets in a
+     * Similar to Items().OfType( SCH_SHEET_T ), but return the sheets in a
      * deterministic order (L-R, T-B) for sheet numbering.
      * @param aItems
      */