deleted unused schema file

src/schemas/data.py

@@ -1,35 +0,0 @@
-from dataclasses import dataclass, field, fields
-
-
-@dataclass(frozen=True)
-class Position:
-    """A single character span within a sample's text."""
-
-    position_text: str = ""
-    length: int = 0
-    offset: int = 0
-
-
-@dataclass(frozen=True)
-class Entity:
-    """A mention group for one entity within a sample."""
-
-    entity_id: str = ""
-    entity_text: str = ""
-    entity_type: str = ""
-    positions: list = field(default_factory=list)
-    label: str = ""
-
-
-@dataclass(frozen=True)
-class Sample:
-    """A single news article with its annotated entities."""
-
-    id: str = ""
-    text: str = ""
-    entities: list = field(default_factory=list)
-
-
-def required_keys(cls) -> set[str]:
-    """Return the set of required top-level keys for a data dataclass."""
-    return {f.name for f in fields(cls)}