Can I delete lrdata files

I have a laptop that is almost four years old.  It has a very small hard drive, and about 10Gb of the drive is occupied by lrdata files from my Lightroom catalogs.  I only use this laptop for travel and run Lightroom to transfer images from my memory cards to two external drives where I store my images while traveling (the computer's hard drive being too small to store images).  Because of this, the Lightroom catalog on the laptop is rather large, but I don't use it for anything.  My desktop contains my master Lightroom catalog and files.

Can I safely delete the lrdata files from the laptop?