[DBMON-6788] Remove duplicated tags logic from clickhouse (#24272)

* [DBMON-6788] Remove duplicated tags logic from clickhouse

Co-authored-by: Cursor <cursoragent@cursor.com>

* Add changelog

Co-authored-by: Cursor <cursoragent@cursor.com>

---------

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: eric-weaver

clickhouse/changelog.d/24272.fixed

@@ -0,0 +1 @@
+Remove duplicated tags logic now provided by the DatabaseCheck base class.

clickhouse/datadog_checks/clickhouse/clickhouse.py

@@ -10,7 +10,7 @@
 from datadog_checks.base import AgentCheck
 from datadog_checks.base.checks.db import DatabaseCheck
 from datadog_checks.base.utils.db import QueryManager
-from datadog_checks.base.utils.db.utils import TagManager, default_json_event_encoding, resolve_db_host
+from datadog_checks.base.utils.db.utils import default_json_event_encoding, resolve_db_host
 from datadog_checks.base.utils.serialization import json
 
 from . import advanced_queries, queries, utils
@@ -64,8 +64,6 @@ def __init__(self, name, init_config, instances):
         # Track last emission time for database instance metadata (rate limiting)
         self._database_instance_last_emitted = 0
 
-        # Initialize TagManager for tag management (similar to MySQL)
-        self.tag_manager = TagManager()
         self.tag_manager.set_tags_from_list(self._config.tags, replace=True)
         self._add_core_tags()
 
@@ -142,11 +140,6 @@ def _init_dbm_components(self):
         else:
             self.parts_and_merges = None
 
-    @property
-    def tags(self) -> list[str]:
-        """Return the current list of tags from the TagManager."""
-        return list(self.tag_manager.get_tags())
-
     def _add_core_tags(self):
         """
         Add tags that should be attached to every metric/event.