How to remove com.symantec.ms.systemextension?

Hi, after removing Norton antivirus in the library were tails. Special programs Norton Cleanup and RemoveSymantecMacFiles did not cope with the task completely. Etrecheck shows persistent system crashes.

I can't delete file package on the address:

Libraries > System extensions > F9265F0D-8EE5-4C04-B0EF-E3DE75D717D3 >

com.symantec.mes.systemextension.systemextension

(it's protected by the system).

I will be grateful for your help)))