How to remove the following things?

[Goodman_2020]

Hi, i would like to know what is the template i have to modify and what to remove in the template to remove the display of the following things:

1. The icons at bottom of the pages telling "new posts" "thread closed" etc.
2. The posts rules just below the icons
3. The writing window used for every thread (the one where you write your messages). (i dont need it because i use the hack custom thread fields, and there wont be any message after the thread)

Thx