Log out and just stop using it.
There’s no need to actually delete it outright.
...you’ve only posted 4 times prior to this thread. Unless you wrote something that scares you enough to want a retraction, just walk away. To be blunt (and not mean-spirited), nobody will care what you wrote; nobody cares enough to link you with “AL_76” and go hunting down your four posts which will be smothered in the thousands of posts made per hour.
There’s no need to actually delete it outright.
That's not exactly true...if the healthcare bill passes, there may be an amputation in your future due to your association, however limited, with FR.;-)