scripts: requirements-compliance.txt: fix windows requirements

Modify the requirements-compliance.txt to exclude python-magic from
windows system installation. On windows, the line:
""python-magic-bin; sys_platform == "win32""" already exists. Adding:
python-magic on windows creates issues where the check_compliance.py
script will either freeze or throw errors related to libmagic.

Signed-off-by: Jacob Wienecke <jacob.wienecke@nxp.com>