Fixing import and database revision branches (#2640)

* Fixing import and database revision branches

src/dispatch/case/models.py

@@ -33,7 +33,6 @@
 from dispatch.tag.models import TagRead
 from dispatch.ticket.models import TicketRead
 from dispatch.workflow.models import WorkflowInstanceRead
-from dispatch.signal.models import SignalRead
 
 from .enums import CaseStatus
 
@@ -193,7 +192,6 @@ class CaseRead(CaseBase):
     duplicates: Optional[List[CaseReadNested]] = []
     escalated_at: Optional[datetime] = None
     events: Optional[List[EventRead]] = []
-    # signals: Optional[List[SignalRead]] = []
     groups: Optional[List[GroupRead]] = []
     incidents: Optional[List[IncidentRead]] = []
     name: Optional[NameStr]

src/dispatch/database/revisions/tenant/versions/2022-10-31_34aeedc9d09a.py

@@ -0,0 +1,24 @@
+"""empty message
+
+Revision ID: 34aeedc9d09a
+Revises: 4b65941d065a, 01aa49ca0470, 3a5e776ddce4
+Create Date: 2022-10-31 09:41:11.971654
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '34aeedc9d09a'
+down_revision = ('4b65941d065a', '01aa49ca0470', '3a5e776ddce4')
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    pass
+
+
+def downgrade():
+    pass