Fix sort order of Imported Allele Infos

classification/models/classification_variant_info_models.py

@@ -403,11 +403,6 @@ def get_absolute_url(self):
     def __str__(self):
         return f"{self.imported_genome_build_patch_version} {self.imported_c_hgvs or self.imported_g_hgvs}"
 
-    def __lt__(self, other: 'ImportedAlleleInfo'):
-        def sort_key(obj: ImportedAlleleInfo):
-            return obj.imported_genome_build_patch_version, obj.imported_c_hgvs
-        return sort_key(self) < sort_key(other)
-
     @property
     def variant_coordinates_imported_and_resolved(self) -> Tuple[VariantCoordinate, VariantCoordinate]:
         imported_vc: Optional[VariantCoordinate] = self.variant_coordinate_obj
@@ -502,15 +497,10 @@ def apply_validation(self, force_update: bool = False):
         latest_validation.save()
         self.latest_validation = latest_validation
 
-    def __lt__(self, other):
-        if self.grch38:
-            if other.grch38:
-                return self.grch38 < other.grch38
-            else:
-                return False
-        elif other.grch38:
-            return True
-        return self.imported_c_hgvs < other.imported_c_hgvs
+    def __lt__(self, other: 'ImportedAlleleInfo'):
+        def sort_key(obj: ImportedAlleleInfo):
+            return obj.imported_genome_build_patch_version, obj.imported_c_hgvs
+        return sort_key(self) < sort_key(other)
 
     @property
     def imported_c_hgvs_obj(self) -> Optional[CHGVS]: