fix(metric_stats): Fix tests and mocks (#99290)

Continuation of #99276.

`sentry-relay` has been bumped to a newest version, so now we can remove
`metric_stats` from mocks.

Author: vgrozdanic

tests/sentry/api/endpoints/test_relay_globalconfig_v3.py

@@ -44,14 +44,12 @@ def inner(version, global_):
         "replay.relay-snuba-publishing-disabled.sample-rate": 1.0,
         "relay.metric-bucket-distribution-encodings": {
             "custom": "array",
-            "metric_stats": "array",
             "profiles": "array",
             "spans": "array",
             "transactions": "array",
         },
         "relay.metric-bucket-set-encodings": {
             "custom": "base64",
-            "metric_stats": "base64",
             "profiles": "base64",
             "spans": "base64",
             "transactions": "base64",
@@ -67,21 +65,6 @@ def test_global_config() -> None:
     if not config["options"]["relay.span-normalization.allowed_hosts"]:
         del config["options"]["relay.span-normalization.allowed_hosts"]
 
-    # NOTE (vgrozdanic): temporary fix for the test, until metric_stats is completely removed
-    # from sentry codebase. It has been removed from relay, without being first removed from
-    # sentry
-    if "metric_stats" in config["options"]["relay.metric-bucket-distribution-encodings"]:
-        del config["options"]["relay.metric-bucket-distribution-encodings"]["metric_stats"]
-
-    if "metric_stats" in normalized["options"]["relay.metric-bucket-distribution-encodings"]:
-        del normalized["options"]["relay.metric-bucket-distribution-encodings"]["metric_stats"]
-
-    if "metric_stats" in config["options"]["relay.metric-bucket-set-encodings"]:
-        del config["options"]["relay.metric-bucket-set-encodings"]["metric_stats"]
-
-    if "metric_stats" in normalized["options"]["relay.metric-bucket-set-encodings"]:
-        del normalized["options"]["relay.metric-bucket-set-encodings"]["metric_stats"]
-
     assert normalized == config