chore(ci): remove unused recordings

Added a script to cleanup recordings. While doing this, moved the CI
matrix generation to a separate script so there is a single source of
truth for the matrix.

Ran the cleanup script as:

```
PYTHONPATH=. python scripts/cleanup_recordings.py
```

We can eventually put this as part of the pre-commit workflow to ensure
that the recordings are always up to date and that no stale recordings
are left in the repo.

scripts/generate_ci_matrix.py

@@ -0,0 +1,59 @@
+#!/usr/bin/env python3
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the terms described in the LICENSE file in
+# the root directory of this source tree.
+
+"""
+Generate CI test matrix from suites.py with schedule/input overrides.
+
+This script is used by .github/workflows/integration-tests.yml to generate
+the test matrix dynamically based on the CI_MATRIX definition in suites.py.
+"""
+
+import json
+import sys
+from pathlib import Path
+
+# Add tests/integration to path
+sys.path.insert(0, str(Path(__file__).parent.parent / "tests/integration"))
+
+from suites import CI_MATRIX
+
+
+def generate_matrix(schedule="", test_setup=""):
+    """
+    Generate test matrix based on schedule or manual input.
+
+    Args:
+        schedule: GitHub cron schedule string (e.g., "1 0 * * 0" for weekly)
+        test_setup: Manual test setup input (e.g., "ollama-vision")
+
+    Returns:
+        Matrix configuration as JSON string
+    """
+    # Weekly vllm test on Sunday
+    if schedule == "1 0 * * 0":
+        matrix = [{"suite": "base", "setup": "vllm"}]
+    # Manual input for specific setup
+    elif test_setup == "ollama-vision":
+        matrix = [{"suite": "vision", "setup": "ollama-vision"}]
+    # Default: use CI_MATRIX from suites.py
+    else:
+        matrix = CI_MATRIX
+
+    # GitHub Actions expects {"include": [...]} format
+    return json.dumps({"include": matrix})
+
+
+if __name__ == "__main__":
+    import argparse
+
+    parser = argparse.ArgumentParser(description="Generate CI test matrix")
+    parser.add_argument("--schedule", default="", help="GitHub schedule cron string")
+    parser.add_argument("--test-setup", default="", help="Manual test setup input")
+
+    args = parser.parse_args()
+
+    print(generate_matrix(args.schedule, args.test_setup))