Removes unused imports from documentation config.
Removes unused imports from documentation config.

The module sys is not currently being used by
conf.py for the sphinx documentation. Therefore,
we've removed it to stop static analysis tools
from continuously complaining about this.

Signed-off-by: Gora Khargosh <a2078c57e3ac12c6dfb97b7c2c4e6d6d7db7e92f@gmail.com>

gorakhargosh/mom,gorakhargosh/mom