buildroot

package/mono: bump to version 5.4.0.201

This patch bumps mono to version 5.4.0.201 and monolite
to version 1050400003.
It also removes a patch not needed anymore.

Signed-off-by: Angelo Compagnucci <angelo.compagnucci@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>