blackieoneshot 

Cateye wireless computer. The head unit went missing about a year ago. Meant to replace it, but it hasn't happened. Speed never mattered much and the miles are the same as they ever were.

rhm

I still use "clipless pedals" very occasionally, but have given it up for most purposes, and may give it up entirely.

I used to use a rack and panniers for most riding, but now just use a messenger bag for commuting and even for some shopping.

I now rarely use any cycling-specific clothing, including the shorts and the gloves. Cycling shorts don't seem to give me any advantage. Same with the gloves. I often wear plain cotton gloves or gardening gloves on the bike, though.

Bike computers. i used to have one, and I loved it. So I got another, and it was different from the first one, and I got confused. With each additional computer I've bought, I've become more confused. Now I don't bother. Ahh!

Maps. Okay, I still love maps, but they're so hard to find, and so fragile... I rarely use them any more.

kickstart

I no longer wear bike shorts as I find them sweaty, uncomfortable, and ugly. Jerseys because they are uncomfortable, don't like the back pockets, ugly, and generic active wear provides all the benefits at a much lower cost.
Road clipless as the shoes are useless off the bike. Skinny tires as they are uncomfortable and not the best choice for most of my riding conditions.
I still have bikes with drops, rim brakes, and derailleurs, but consider them as back up bikes or for recreational riding.

fietsbob

I Moved close in , I stopped using my Road bike . mostly .. take out the Brommy. wear regular clothes like sweat pants.

touring rig hauls Groceries..

Ekdog

I have to either wear gloves or use sunscreen because of precancerous lesions on my hands.

Ekdog

Giving up on clipless pedals. Switching over to platforms.

Only wear a helmet on Spanish highways, where it is now required. I find wearing a baseball cap underneath rather uncomfortable, so I've gone over to a Visor Buff.

wipekitty

I stopped using rear view mirrors on all but one of my bikes. Turns out that my head's swivel function is sufficient unless I'm traveling at fairly high speeds.

I still carry my phone, but I've tried to memorize routes rather than rely upon Google Maps. There's no service on long stretches of my rides, and I don't quite trust the maps to download and store properly before a ride.

Otherwise, I've sadly increased the amount of cycling gear I use. Side effect of winter, plus getting older and more whiny when things hurt or go numb after riding.

tFUnK

I also ditched the gloves. I know there are many reasons why people might find gloves useful but in my opinion padded gloves are not a long-term fix to a poor bike fit. I would ditch the helmet for leisurely rides but the wife insists that I wear one. Just as well, as I don't fully trust drivers near where I live and work. I stopped using a cycling computer or GPS unit some time ago. Part of me misses the data, but another part of me appreciates the simplicity and lack of distraction. Recently I started logging my rides on Strava again using my smartphone. The phone stays in my pocket during the ride and I only look at the data afterwards. Like others have mentioned, I also went away from SPDs or toe clips in favor of dual-sided platform/SPD pedals, at least on the commuter bike. My road and cross bikes are still fitted with regular SPD pedals but I'd like to get another set of the platform/SPD types for the cross bike in the future.