DROP_SIGNATURE wmi class in namespaces

DROP_SIGNATURE in WMI namespaces

Class	namespace	Childs	Props	Meths	Ins	Insd	Abs	Sing
DROP_SIGNATURE	0	13	0	-	-	✓	-

Class	namespace	Childs	Meths	Ins	Insd	Abs
ADD_SIGNATURE	0	13	-	-	✓	-
ADD_SIGNATURE_SCHEMA_OBJECT	0	14	-	-	✓	-
DDL_CRYPTO_SIGNATURE_EVENTS	4	13	-	-	✓	-
DROP_SIGNATURE_SCHEMA_OBJECT	0	14	-	-	✓	-