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
diff --git a/library/RAN_Adapter.ttcnpp b/library/RAN_Adapter.ttcnpp
index 8e19241..e995e8d 100644
--- a/library/RAN_Adapter.ttcnpp
+++ b/library/RAN_Adapter.ttcnpp
@@ -90,7 +90,7 @@
 
 	/* create components */
 	ba.vc_SCCP := SCCP_CT.create(id & "-SCCP");
-	if (not istemplatekind(ops, "omit")) {
+	if (isvalue(ops)) {
 		ba.vc_RAN := RAN_Emulation_CT.create(id & "-RAN");
 	}
 	select (cfg.transport) {
@@ -142,7 +142,7 @@
 		}
 	}
 
-	if (not istemplatekind(ops, "omit")) {
+	if (isvalue(ops)) {
 		timer T := 5.0;
 		T.start;
 		//T.timeout;