Fix ruff-format lint: remove extra blank line in e2e_golden_test

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Signed-off-by: Justin Chu <11205048+justinchuby@users.noreply.github.com>

Author: justinchuby

tests/e2e_golden_test.py

@@ -127,7 +127,6 @@ def _build_mm_prompt(
     return base_prompt
 
 
-
 def _make_empty_kv_cache(
     session: OnnxModelSession,
     config: object,