When the marketing team requests a pixel(s) be added to the site, they must provide the date that the pixel can be removed. Right now, I put a reminder on my calendar to delete the end-of-life pixels. Note: There are a few pixels that don't have an end date....but those are far-and-few between.
It would be so super nice if there was a feature in Launch that allowed me to put a start date and an end date (i.e. effective date range) for each action. So, when the start date hits, the action would fire off the pixel (or chunk of logic within it). And when the end date hits, the action would be deleted automatically.
I ask for it to be deleted versus commented out, because we saw gains when we commented out end-of-life pixels....and then we saw more gains in performance when we completely removed the pixel code.