Remove benchmark exports from __init__

Stop exporting benchmark_videos and download_benchmarking_data from dlclive.__init__.py and update tests to import them directly from dlclive.benchmark. Keeps the package __init__ smaller and avoids importing the benchmark module at package import time.

Author: C-Achard

dlclive/__init__.py

@@ -11,7 +11,6 @@
 
 _AVAILABLE_BACKENDS = get_available_backends()
 
-from dlclive.benchmark import benchmark_videos, download_benchmarking_data
 from dlclive.display import Display
 from dlclive.dlclive import DLCLive
 from dlclive.engine import Engine

tests/test_benchmark_script.py

@@ -2,7 +2,7 @@
 
 import pytest
 
-from dlclive import benchmark_videos, download_benchmarking_data
+from dlclive.benchmark import benchmark_videos, download_benchmarking_data
 from dlclive.engine import Engine