support/testing/tests/download/gitremote: remove trailing whitespace
Fixes the following flake8 warnings: support/testing/tests/download/gitremote.py:29:67: W291 trailing whitespace support/testing/tests/download/gitremote.py:30:60: W291 trailing whitespace Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
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