Remove pi from cc list

Author: knikolla

src/coldfront_plugin_cloud/management/commands/fetch_daily_billable_usage.py

@@ -294,5 +294,9 @@ def send_alert_email(cls, allocation: Allocation, resource: Resource, alert_valu
             ),
             sender=EMAIL_SENDER,
             receiver_list=[allocation.project.pi.email],
-            cc=cls.get_managers(allocation),
+            cc=[
+                x
+                for x in cls.get_managers(allocation)
+                if x != allocation.project.pi.email
+            ],
         )