Remove statsd decorators from dao functions

This done so that we do not use statsd on our http endpoint.
We decided we do not need metrics that this gave us. If we
change our minds, we will add Prometheus-friendly decorators
instead in the future.

app/dao/services_dao.py

@@ -1,7 +1,6 @@
 import uuid
 from datetime import date, datetime, timedelta
 
-from notifications_utils.statsd_decorators import statsd
 from sqlalchemy.sql.expression import asc, case, and_, func
 from sqlalchemy.orm import joinedload
 from sqlalchemy import cast, Float
@@ -426,7 +425,6 @@ def delete_service_and_all_associated_db_objects(service):
     db.session.commit()
 
 
-@statsd(namespace="dao")
 def dao_fetch_stats_for_service(service_id, limit_days):
     # We always want between seven and eight days
     start_date = midnight_n_days_ago(limit_days)
@@ -435,7 +433,6 @@ def dao_fetch_stats_for_service(service_id, limit_days):
     ).all()
 
 
-@statsd(namespace="dao")
 def dao_fetch_todays_stats_for_service(service_id):
     return _stats_for_service_query(service_id).filter(
         func.date(Notification.created_at) == date.today()
@@ -470,7 +467,6 @@ def _stats_for_service_query(service_id):
     )
 
 
-@statsd(namespace='dao')
 def dao_fetch_todays_stats_for_all_services(include_from_test_key=True, only_active=True):
     today = date.today()
     start_date = get_london_midnight_in_utc(today)