feat: removes unused properies from node and edge pydantic models (#884)

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## Description
Removes unused properies from node and edge pydantic models.

## DCO Affirmation
I affirm that all code in every commit of this pull request conforms to
the terms of the Topoteretes Developer Certificate of Origin.

Co-authored-by: Boris <[email protected]>

Author: hajdul88

cognee/shared/data_models.py

@@ -46,19 +46,13 @@ class Node(BaseModel):
         name: str
         type: str
         description: str
-        properties: Optional[Dict[str, Any]] = Field(
-            None, description="A dictionary of properties associated with the node."
-        )
 
     class Edge(BaseModel):
         """Edge in a knowledge graph."""
 
         source_node_id: str
         target_node_id: str
         relationship_name: str
-        properties: Optional[Dict[str, Any]] = Field(
-            None, description="A dictionary of properties associated with the edge."
-        )
 
     class KnowledgeGraph(BaseModel):
         """Knowledge graph."""