Clean-up unused feature data

Clean-up unused feature data

[Issue#] N/A
[Problem] N/A
[Cause] N/A
[Solution] Current WRT uses Privilege instead of Feature
Deprecated :
typedef for "param" (Params, Param, ParamsIterator)
API for "param" and "required" (isRequired(), getParams(), addParam)
Remove test case
[SCMRequest] N/A

Change-Id: I2bb282fbff562a8181b1bc3bbe9dc44b9e3d4ca1