The Same problem popped up on my phone recently, and I don't remember Uninstalling ANY apps this month at all.
From looking at posts going all the way back to 2012, it seems to be a mysterious problem that no one has completely figured out.
In my customary usage, I don't install a bunch of apps, and tire of them, and uninstall. I don't play games, or anything like that, so my apps pretty much stay the same Always. Last month, I tried a couple of Calendar apps, and uninstalled them, but I've Never seen this goofy "removed apps" usage EVER...... and it just popped up in the last few days, and I Haven't Installed or Uninstalled ANY apps this month at all.