There are two ways to delete a pipe. It can be done directly from within the company dashboard, by hovering over the pipe, clicking on the three dots in the lower right corner of the pipe square and selecting the 'delete pipe' option.
Type confirm and your pipe will be deleted.
The other way to delete a pipe is by accessing the pipe settings. First you need to open the pipe you wish to delete. Then, click on the gear icon in the upper right corner of the screen and click on 'pipe settings'.
After that, scroll down the settings screen and click on the red 'delete pipe' button. Type 'confirm' to let Pipefy know you really want to delete your pipe and you're good to go.