MSW code reverted. Regrettfully the work has to be reconsidered.

Both ERT and the resinsight code is rolled back to before MSW was introduced as refined.
p4#: 21999

ApplicationCode/FileInterface/RifReaderEclipseOutput.h

@@ -56,7 +56,7 @@ public:
 private:
     bool                    readActiveCellInfo();
     void                    buildMetaData();
-    void                    readWellCells(const ecl_grid_type* mainEclGrid);
+    void                    readWellCells();
     
     void                    openInitFile();
     bool                    openDynamicAccess();