Remove an unused script and system-specific .python-version from tests

GitOrigin-RevId: e716c8234cd5dba4992c655efc5b9b773d56b018

python/helpers/tests/generator3_tests/.python-version

@@ -1,5 +0,0 @@
-2.7.15
-3.4.9
-3.5.6
-3.6.8
-3.7.2

python/helpers/tests/generator3_tests/data/compile_binaries.py

@@ -1,19 +0,0 @@
-import os
-
-from Cython.Build.Cythonize import main as cythonize
-
-_test_data_dir = os.path.dirname(os.path.abspath(__file__))
-_cythonize_options = ['--inplace']
-
-
-def main():
-    for dir_path, _, file_names in os.walk(_test_data_dir):
-        for file_name in file_names:
-            mod_name, ext = os.path.splitext(file_name)
-            if ext == '.pyx':
-                cythonize(_cythonize_options + [os.path.join(dir_path, file_name)])
-                os.remove(os.path.join(dir_path, mod_name + '.c'))
-
-
-if __name__ == '__main__':
-    main()