Do not install tests in site-packages

Author: musicinmybrain

setup.py

@@ -13,7 +13,7 @@
 setup(
     name='msal-extensions',
     version=__version__,
-    packages=find_packages(),
+    packages=find_packages(exclude=["tests"]),
     long_description=long_description,
     long_description_content_type="text/markdown",
     package_data={'': ['LICENSE']},