chore: remove deprecated chunk text test suite

tests/test_chunk_text.py

@@ -1,16 +0,0 @@
-from src.graphBuilder.neo4j.finGraph import chunk_text
-
-
-def test_chunk_text_empty_returns_empty_list():
-    assert chunk_text("") == []
-
-def test_chunk_text_none_returns_empty_list():
-    assert chunk_text(None) == []
-
-def test_chunk_text_short_text_returns_single_chunk():
-    result = chunk_text("짧은 텍스트", size=500, overlap=50)
-    assert len(result) == 1
-
-def test_chunk_text_long_text_splits_into_multiple_chunks():
-    result = chunk_text("가" * 1000, size=500, overlap=50)
-    assert len(result) >= 2