fix test to correctly use assumption of no comments in relationships

Signed-off-by: Brandon Lum <lumjjb@gmail.com>

Author: lumjjb

src/spdx_tools/spdx/parser/jsonlikedict/relationship_parser.py

@@ -125,6 +125,7 @@ def parse_document_describes(
     def parse_has_files(
         self, package_dicts: List[Dict], existing_relationships: List[Relationship]
     ) -> List[Relationship]:
+        # assume existing relationships are stripped of comments
         logger = Logger()
         contains_relationships = []
         for package in package_dicts:

tests/spdx/parser/jsonlikedict/test_relationship_parser.py

@@ -169,14 +169,14 @@ def test_parse_has_files():
 @pytest.mark.parametrize(
     "has_files,existing_relationships,contains_relationships",
     [
+        # pre-requisite for parse_has_files requires that comments in relationships are stripped
         (
             ["SPDXRef-File1", "SPDXRef-File2"],
             [
                 Relationship(
                     spdx_element_id="SPDXRef-Package",
                     relationship_type=RelationshipType.CONTAINS,
                     related_spdx_element_id="SPDXRef-File1",
-                    comment="This relationship has a comment.",
                 ),
                 Relationship(
                     spdx_element_id="SPDXRef-File2",