Rework Chamfers
Chamfer point with adjacent edges
3-D Standard > Process > Chamfer 
> Chamfer point with adjacent edges
Use this function to directly chamfer three or more edges converging in one corner. The corner will be reworked automatically.
Identify the desired corner.
Delete chamfer/fillet
3-D Standard > Process > Chamfer > Delete chamfer/fillet 
Simplify > Delete > Delete chamfer/fillet
Use this function to delete fillets and chamfers.
Identify two edges of the fillet or chamfer you want to delete.
Radius and linear dimensioning of the deleted chamfer/fillet are also removed.
