style: fix ruff errors

Author: emptybutton

src/tgdb/application/common/ports/relation_views.py

@@ -1,9 +1,6 @@
 from abc import ABC, abstractmethod
-from collections.abc import Mapping, Sequence
-from dataclasses import dataclass
 
 from tgdb.entities.numeration.number import Number
-from tgdb.entities.relation.relation import Relation
 
 
 class RelationViews[ViewOfAllRelationsT, ViewOfOneRelationT](ABC):

src/tgdb/application/common/ports/relations.py

@@ -26,4 +26,4 @@ async def relation(self, relation_number: Number) -> Relation:
     async def add(self, relation: Relation) -> None:
         """
         :raises tgdb.application.common.ports.relations.NotUniqueRelationNumberError:
-        """
+        """  # noqa: E501

src/tgdb/application/relation/create_relation.py

@@ -15,7 +15,7 @@ async def __call__(
     ) -> None:
         """
         :raises tgdb.application.common.ports.relations.NotUniqueRelationNumberError:
-        """
+        """  # noqa: E501
 
         new_relation = Relation.new(relation_number, relation_schema)
         await self.relations.add(new_relation)

src/tgdb/application/view_tuples.py

@@ -1,17 +1,14 @@
 from dataclasses import dataclass
 
 from tgdb.application.common.ports.clock import Clock
-from tgdb.application.common.ports.relations import NoRelationError, Relations
+from tgdb.application.common.ports.relations import Relations
 from tgdb.application.common.ports.shared_horizon import SharedHorizon
 from tgdb.application.common.ports.tuples import Tuples
 from tgdb.entities.horizon.transaction import XID
 from tgdb.entities.numeration.number import Number
 from tgdb.entities.relation.scalar import Scalar
 from tgdb.entities.relation.tuple_effect import viewed_tuple
-from tgdb.entities.relation.versioned_tuple import (
-    versioned_tuple,
-)
-from tgdb.entities.tools.assert_ import not_none
+from tgdb.entities.relation.versioned_tuple import versioned_tuple
 
 
 @dataclass(frozen=True)
@@ -38,9 +35,7 @@ async def __call__(
             relation_number, attribute_number, scalar
         )
         versioned_tuples = map(versioned_tuple, tuples)
-
         relation = await self.relartions.relation(relation_number)
-        relation = not_none(relation, else_=NoRelationError)
 
         viewed_tuples = (
             viewed_tuple(versioned_tuple, relation)

src/tgdb/entities/horizon/horizon.py

@@ -20,7 +20,6 @@
 )
 from tgdb.entities.relation.tuple_effect import (
     DeletedTuple,
-    InvalidTuple,
     MutatedTuple,
     NewTuple,
     ViewedTuple,