Remove integration test for dx_documentation_add
Remove integration test for dx_documentation_add

The integration test for dx_documentation_add cannot be
performed in its present form. The parent context is fundamental
to the top-level abstraction. Hard to unittest the underlying
components using only parts of the top level abstraction.
Remove this test for now - may re-introduce on a purely unit-test
level.

veeg/disir-c,veeg/disir-c