Do not test serialization modifiers in a value-dependent manner

[mjacoby]

There are a range of test cases that test what's been referred to in the specification as "applicability of serialization modifiers" (see spec).

However, the meaning of this table of obviously not clear as there is not definition of "applicability". This has been discussed in the TF API admin-shell-io/aas-specs-api#327

As the specification is underdefined and there is no official statement how this is expected to work the related tests should be removed.