JS: Simplify logic

Author: asgerf

shared/util/codeql/util/test/InlineExpectationsTest.qll

@@ -798,14 +798,11 @@ module TestPostProcessing {
     }
 
     private string getAnActiveTag() {
-      result = "Alert"
+      result = ["Alert", "RelatedLocation"]
       or
       getQueryKind() = "path-problem" and
       hasExpectationWithValue(["Source", "Sink"], _) and
       result = ["Source", "Sink"]
-      or
-      hasExpectationWithValue("RelatedLocation", _) and
-      result = "RelatedLocation"
     }
 
     private string getTagRegex() { result = "(" + concat(getAnActiveTag(), "|") + ")(\\[(.*)\\])?" }