title says it all, what was the first server you played on (legit, before getting into cheating)
mine was mineplex, it was good a couple years ago, sad to see that it's dead now.
How to actually remove it
Factory resetting is your best bet but if you really don't want to here you go:
1. Run hostsmod as mentioned above.
2. Delete. Minecraft
3. Delete %temp%
4. Uninstall java
After you did this you wanna go on your windows update settings and reinstall latest update
This worked for me and removed kant's shitty rat.
Although I recommend factory resetting (I factory reseted because I don't want to risk anything ya know)