fix: remove unused imports and dead variable in eval package

config.py: remove unused 'import re' and unused 'first_indent'
variable in _parse_block (first_content was the only one read).

dataset.py: remove unused TraceStore import.

Co-authored-by: Ona <no-reply@ona.com>

Author: Siddhant-K-code

src/agent_trace/eval/config.py

@@ -6,7 +6,6 @@
 
 from __future__ import annotations
 
-import re
 from dataclasses import dataclass, field
 from pathlib import Path
 
@@ -94,9 +93,7 @@ def _parse_block(start: int, base_indent: int) -> tuple[int, object]:
         if i >= len(lines):
             return i, {}
 
-        first_line = lines[i]
-        first_indent = _indent(first_line)
-        first_content = first_line.strip()
+        first_content = lines[i].strip()
 
         # Determine block type from first non-blank line
         if first_content.startswith("- "):

src/agent_trace/eval/dataset.py

@@ -14,7 +14,7 @@
 from dataclasses import asdict, dataclass, field
 from pathlib import Path
 
-from ..store import TraceStore
+
 
 
 @dataclass