Revert "Backport workaround for adding RA cooldown"

This reverts commit 5fa9019.

pulpcore/app/models/content.py

@@ -703,10 +703,6 @@ class RemoteArtifact(BaseModel, QueryMixin):
         sha256 (models.CharField): The expected SHA-256 checksum of the file.
         sha384 (models.CharField): The expected SHA-384 checksum of the file.
         sha512 (models.CharField): The expected SHA-512 checksum of the file.
-        failed_at_backport49 (models.DateTimeField):
-            The datetime of last download attempt failure. Only for old branches to
-            avoid migration backport issues.
-
 
     Relations:
 
@@ -729,7 +725,6 @@ class RemoteArtifact(BaseModel, QueryMixin):
     content_artifact = models.ForeignKey(ContentArtifact, on_delete=models.CASCADE)
     remote = models.ForeignKey("Remote", on_delete=models.CASCADE)
     pulp_domain = models.ForeignKey("Domain", default=get_domain_pk, on_delete=models.PROTECT)
-    failed_at_backport49 = models.DateTimeField(null=True)
 
     objects = BulkCreateManager.from_queryset(RemoteArtifactQuerySet)()
 

pulpcore/content/handler.py

@@ -827,7 +827,7 @@ async def _stream_content_artifact(self, request, response, content_artifact):
         remote_artifacts = (
             content_artifact.remoteartifact_set.select_related("remote")
             .order_by_acs()
-            .exclude(failed_at_backport49__gte=timezone.now() - timedelta(seconds=protection_time))
+            .exclude(failed_at__gte=timezone.now() - timedelta(seconds=protection_time))
         )
         async for remote_artifact in remote_artifacts:
             try:
@@ -1126,7 +1126,7 @@ async def finalize():
         try:
             download_result = await downloader.run()
         except DigestValidationError:
-            remote_artifact.failed_at_backport49 = timezone.now()
+            remote_artifact.failed_at = timezone.now()
             await remote_artifact.asave()
             await downloader.session.close()
             close_tcp_connection(request.transport._sock)