Splitter Question

Hello - I've been having frequent outages recently but things are OK now except getting intermittent MDD message Timeout.  

I currently have a splitter that was originally installed by Xfinity (Commscope SV 3G) but I no longer have cable TV boxes.  Can I just remove this splitter or will that cause other issues when my current signals are OK?   

Also, what connector do I need to join the two coaxials without the splitter?