Deleting or Re-Setting Pokemon Go Is Harder Than You Think
If you are one of the people who started to play Pokemon Go last week and now want to get rid of it for space on your phone, or you just wanna start all over again, it's gonna be a longer process than you think. Deleting your in-game account takes a few steps, and even then it doesn’t register right away. You can’t do it within the app itself, either. \
You can check out the 4 or 5 steps you will need to do to delete your account here.
And if you think that "I'll just start a new account" you may need to think again cause the PokemonGo servers are already behind on accounts so you may have to wait a bit before it registers. Plus the servers just crashed this weekend so that's something the game makers are looking to fix soon. Also you can't create multiple accounts on a single email.
If you don't think you will ever delete your account or restart it then have fun but just know if you are gonna delete account go through the steps above as just deleting the app from your phone won't completely delete your account on the game's app.