Remove duplicate get_external_apt_dependencies.py and re-standardize CI package install logs (#14533)

tests/get_external_apt_dependencies.py

@@ -1,20 +0,0 @@
-#!/usr/bin/env python3
-
-import itertools
-import os
-import sys
-
-from ts_utils.metadata import read_metadata
-from ts_utils.paths import STUBS_PATH
-
-if __name__ == "__main__":
-    distributions = sys.argv[1:]
-    if not distributions:
-        distributions = os.listdir(STUBS_PATH)
-    dependencies = set(
-        itertools.chain.from_iterable(
-            read_metadata(distribution).stubtest_settings.apt_dependencies for distribution in distributions
-        )
-    )
-    for dependency in sorted(dependencies):
-        print(dependency)

tests/get_stubtest_system_requirements.py

@@ -5,5 +5,5 @@ from ts_utils.requirements import get_stubtest_system_requirements
 
 if __name__ == "__main__":
     distributions = sys.argv[1:]
-    for requirement in get_stubtest_system_requirements(distributions):
+    for requirement in sorted(get_stubtest_system_requirements(distributions)):
         print(requirement)