Is lid sensor really necessary for a laptop?

I ordered lcd screen and video cable for replacement, as these two were not working. At the time I opened the laptop to check the model of these two, my eyes went to the pcb area where power cord is inserted into laptop, this item on the picture is what was kinda of broken, actually its two connections with the pcb, I guess it is lid sensor, but not sure, Now I want to know whether my pc will work or not in the case this lid sensor is not in connection with the pcb.In simple words two legs of this pin will be not in connection with board

one image is that without pin that I've removed,[without QR Code]