Issue: Panic on line deletion

[areYouLazy]

Describe the bug
As mentioned here there's a panic on line deletion.
Panic occurs if there's no newline at the end of the file and you try to delete line by hostname.

To Reproduce
Steps to reproduce the behavior:

1. Delete last empty line from hosts file by hand
2. Use hosty to delete a line by hostname
3. Panic

Expected behavior
As per deletion-by-ip, deletion should occur even without empty lines at the end of the file

[areYouLazy]

Actually this is fixed but while removing by hostnames we're matching every possible hostname (it seams) so the file is cleaned up except for comments