These methods shouldn't affect formula grouping.

They only change sheet index values in all formula cells uniformly;
they should not affect how they are grouped.

Change-Id: Ie05152de1d6fc5799145e5721c57fd74f8f58239

sc/source/core/data/column.cxx

@@ -2791,10 +2791,7 @@ void ScColumn::UpdateDeleteTab(SCTAB nDelPos, bool bIsMove, ScColumn* /*pRefUndo
     DeleteTabUpdater aFunc(maCellTextAttrs, nDelPos, nSheets, nTab, bIsMove);
     sc::ProcessFormulaEditText(maCells, aFunc);
     if (aFunc.isModified())
-    {
-        RegroupFormulaCells();
         CellStorageModified();
-    }
 }
 
 void ScColumn::UpdateInsertTabAbs(SCTAB nNewPos)
@@ -2802,10 +2799,7 @@ void ScColumn::UpdateInsertTabAbs(SCTAB nNewPos)
     InsertAbsTabUpdater aFunc(maCellTextAttrs, nTab, nNewPos);
     sc::ProcessFormulaEditText(maCells, aFunc);
     if (aFunc.isModified())
-    {
-        RegroupFormulaCells();
         CellStorageModified();
-    }
 }
 
 void ScColumn::UpdateMoveTab( SCTAB nOldPos, SCTAB nNewPos, SCTAB nTabNo )
@@ -2816,10 +2810,7 @@ void ScColumn::UpdateMoveTab( SCTAB nOldPos, SCTAB nNewPos, SCTAB nTabNo )
     MoveTabUpdater aFunc(maCellTextAttrs, nTab, nOldPos, nNewPos);
     sc::ProcessFormulaEditText(maCells, aFunc);
     if (aFunc.isModified())
-    {
-        RegroupFormulaCells();
         CellStorageModified();
-    }
 }