Unable to delete UEFI entry

[saulos]

Hello,
I have installed Ubuntu over Fedora as my second OS, now I'm tring to remove the Fedora entry from UEFI, but with no success.
I run the program and delete the Fedora entry, close the program.
run the program again to check and the Fedora is not listed.
Halt the PC
Start the PC, access to BIOS
Fedora is still in Bios List
Start Windows
run the program and Fedora is listed
I tried many times but with no luck, the Fedora entry is still there

Any help is appreciated
Thanks