chore(model): Drop some unnecessary sorting

The callers do not make any assumption about the ordering, so the
sorting is not needed.

Signed-off-by: Frank Viernau <frank_viernau@epam.com>

model/src/main/kotlin/AdvisorRecord.kt

@@ -127,7 +127,7 @@ data class AdvisorRecord(
  * references. Other [Vulnerability] properties are taken from the first object which has any such property set.
  */
 private fun Collection<Vulnerability>.mergeVulnerabilities(): List<Vulnerability> {
-    val vulnerabilitiesById = groupByTo(sortedMapOf()) { it.id }
+    val vulnerabilitiesById = groupBy { it.id }
     return vulnerabilitiesById.map { it.value.mergeReferences() }
 }