test(ds): Remove unused global config option (#4267)

When looking for where we have to remove that global config option, I
noticed we still have a use in Relay itself. It was just removed.

tests/integration/test_dynamic_sampling.py

@@ -665,10 +665,6 @@ def test_relay_chain(
 def test_relay_chain_keep_unsampled_profile(
     mini_sentry, relay, relay_with_processing, profiles_consumer, mode
 ):
-    mini_sentry.global_config["options"] = {
-        "profiling.profile_metrics.unsampled_profiles.enabled": True,
-    }
-
     profiles_consumer = profiles_consumer()
 
     # Create an envelope with a profile: