Remove references to Inter Context Delegates.

Remove references to Inter Context Delegates.

[Issue#]   LINUXWRT-1061
[Problem]  Unnecessary references to Inter Context Delegates.
[Cause]    Smack and AceCheck tasks inherit after ICDelegateSupport but don't make use of it.
[Solution] Remove the references.

[Verification]
    1. Build repository with tests
    2. Run `wrt-installer-tests-general --output=text` (the same number of
       tests should pass before and after applying this change).

[Remarks]
This change is connected to removal of FastDelegate library task.

Change-Id: Ie35d2882ecab7bc49827b5e32fb096d26629aaa9