Remove RetryFilter from defaults

As of Ic0a03e89903bf925638fa26cca3dac7db710dca3, the RetryFilter is
deprecated in Nova and removed from the defaults. Remove it form the
list of Tempest defaults as well.

Change-Id: I740a9650796c81b289635045e319a09ec5fdf27f
Depends-on: https://review.opendev.org/#/c/663953/
diff --git a/tempest/config.py b/tempest/config.py
index 9e4718b..345daa5 100644
--- a/tempest/config.py
+++ b/tempest/config.py
@@ -511,9 +511,8 @@
                 default=True,
                 help='Enable special configuration drive with metadata.'),
     cfg.ListOpt('scheduler_enabled_filters',
-                default=["RetryFilter", "AvailabilityZoneFilter",
-                         "ComputeFilter", "ComputeCapabilitiesFilter",
-                         "ImagePropertiesFilter",
+                default=["AvailabilityZoneFilter", "ComputeFilter",
+                         "ComputeCapabilitiesFilter", "ImagePropertiesFilter",
                          "ServerGroupAntiAffinityFilter",
                          "ServerGroupAffinityFilter"],
                 help="A list of enabled filters that Nova will accept as "