support/testing/tests/package/test_gst1_python.py: fix flake8 warning

Fixes:

  support/testing/tests/package/test_gst1_python.py:29:1: W391 blank line at end of file

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

support/testing/tests/package/test_gst1_python.py

@@ -26,4 +26,3 @@ class TestGst1Python(TestPythonPackageBase):
                            options=["-initrd", cpio_file])
         self.emulator.login()
     sample_scripts = ["tests/package/sample_gst1_python.py"]
-