Cache folders taking a lot of space: store_00010001/Pictures/cache/com.google.android.googlephotos/picasa--{0,1,2...}

I've found that this cache folders take 1,5GiB of my 16GB Nexus 5: store_00010001/Pictures/cache/com.google.android.googlephotos/picasa--{0,1,2...} Is it cache of some app, which I can easily remove from phone level? (App settings -> clear data/cache?) Or do I have to clear it from computer periodically?