<<rule>> Delete: One-Way Self-References [no opposite]
<<preserve>>
fromClassA : EClass
<<delete>>
oldRefA : EReference
<<forbid, pre>>
preNoOpposite : EReference
<<delete>>
eType
<<forbid, pre>>
eOpposite
<<forbid, pre>>
eOpposite
<<delete>>
eContainingClass
eStructuralFeatures