DROP_CONTRACT wmi class in namespaces

DROP_CONTRACT in WMI namespaces

Class	namespace	Childs	Props	Meths	Ins	Insd	Abs	Sing
DROP_CONTRACT	0	12	0	-	-	✓	-

Class	namespace	Childs	Meths	Ins	Insd	Abs
Contract	0	9	-	-	-	-
CREATE_CONTRACT	0	12	-	-	✓	-
DataContractSerializerOperationBehavior	0	4	-	-	-	-
DDL_CONTRACT_EVENTS	2	12	-	-	✓	-
HeapContract	0	8	-	-	-	-
HeapContract	0	8	-	-	-	-