Revert "RAN_Adapter: invert check for RAN_ops == omit"

This reverts commit 5932cd3463d04c45404c538daff6d25bc3f3d002. It caused
a lot of tests in the ttcn3-bsc-test, ttcn3-bsc-test-latest,
ttcn3-bsc-test-sccplite and ttcn3-bsc-test-sccplite-latest testsuites to
fail with:

RAN_Adapter.ttcnpp:179 Dynamic test case error: Text encoder: Encoding an unbound optional value.

Related: OS#4156
Change-Id: I441c701553eef8e9e018d11923359eb3f3b26826
1 file changed