[[IE]] Deleting a Nested Table inside Table cell is deleting the whole cell

[Satya Minnekanti]

To reproduce the defect:

1. Open Ajax sample.

2. Insert a Table.

3. Go in to a Table cell and insert a Table inside the Table Cell.

4. Activate context menu from the Table Cell in the New Table that was inserted(Nested Table) and Click on Delete Table option.

Expected Result:

Only the Nested Table inside Table Cell is deleted.

Actual Result:

Cell which holds the Nested Table is also deleted.

[Sa'ar Zac Elias]

Note: the cell must contain only the inner table. If it'll have more content it won't be deleted.

[Sa'ar Zac Elias]

DUP of #6289.