remove tests_require from setup.py because its deprecated

comment consistency

Signed-off-by: cshaley <6740446+cshaley@users.noreply.github.com>

kedro-airflow/setup.py

@@ -16,12 +16,7 @@
 with open("requirements.txt", "r", encoding="utf-8") as f:
     requires = [x.strip() for x in f if x.strip()]
 
-# get test dependencies and installs
-with open("test_requirements.txt", "r", encoding="utf-8") as f:
-    test_requires = [x.strip() for x in f if x.strip() and not x.startswith("-r")]
-
-
-# Get the long description from the README file
+# get the long description from the README file
 with open(path.join(here, "README.md"), encoding="utf-8") as f:
     readme = f.read()
 
@@ -35,7 +30,6 @@
     author="Kedro",
     python_requires=">=3.7, <3.11",
     install_requires=requires,
-    tests_require=test_requires,
     license="Apache Software License (Apache 2.0)",
     packages=["kedro_airflow"],
     package_data={"kedro_airflow": ["kedro_airflow/airflow_dag_template.j2"]},