Impossible to erase it ?

You need to check this with your hosting support.

The plugin has no magic powers to resuscitate ??

And by the way, compare the content of the plugin file with the original archive https://downloads.www.ads-software.com/plugin/disable-xml-rpc-pingback.1.0.zip maybe your problem is that you have your WordPress infected and something is trying to cheat you adopting my plugin name.

Definitely you need to check with your host.

Gracias Samuel !
Muy bueno ! tienes razon !!!
It can’t resucitate for sure !!!

I have to check this with my hosting.
Thanks anyway