This screenshot shows my Finder Applications folder containing both Lr 5 and Lr6 apps. I have installed and am successfully using Lr 6. I have the DVD stand alone version, not LR6/CC. Can I just drop the Lr5 app file into trash and not lose photo originally cataloged in Lr5. It seems the top LR .app is LR6. The Adobe Lightroom folder just says version 1060496.
Lightroom 5 and Lightroom 6 are completely independent programs. If you are confident that you no longer need Lightroom 5 on Your system then it is safe to delete it.
Yes, you can get rid of Lightroom 5 since, you are using Lightroom 6.
The one that is highlighted in the screenshot is Lightroom 6.
You need drop the one that says Adobe Photoshop Lightroom 5.app