With this commit, the executions bits are fixed on some xml, csv and ttf
files. The fix was initialy made at the Debian packaging level.

As xlwt is now in Debian buster, the overide is removed.

The linked fonts in Debian package are now removed in one line to
simplify the code.

closes odoo/odoo#60114

Signed-off-by: Christophe Monniez (moc) <moc@odoo.com>