stretch_install_system fails when librealsense2-dkms is installed

[hello-vinitha]

The stretch_install_system.sh script fails when librealsense2-dkms is installed in the system. It cannot uninstall the package due to the following error:

Loading the modified modules into kernel...modprobe: FATAL: Module videodev is in use.
dpkg: error processing package librealsense2-dkms (--remove):
 installed librealsense2-dkms package post-installation script subprocess returned error exit status 1
Processing triggers for libc-bin (2.35-0ubuntu3.8) ...
Errors were encountered while processing:
 librealsense2-dkms
E: Sub-process /usr/bin/dpkg returned an error code (1)

[hello-binit]

The solution is sudo modprobe -r ov13858 as posted here: IntelRealSense/librealsense#13002 (comment)

Will need to think how to integrate this into the install scripts...