Vines growing into Pine Trees

My neighbor, a business, planted a row of pines as a buffer between properties. That was a year ago. Now I see vines growing up into the pines. These vines have broad, 7 pointed leaves on them. Will the vines hurt the pines? Should I go over and pull out the vines ? Or is it a "symbiotic" relationship of some sort ? Looks like the owner planted nothing beneath the pines and these vines are just some native thing that has sprung up, along with a bunch of weeds. The pines were plopped on top of a bunch of piles of dirt, in "healings". The dirt balls are in burlap sacks still, and I am hoping roots will grow through the burlap into the ground. I don't know what variety of pine sthey are. They were about 7 to 8 feet tall whaen placed there last year. They look pretty healthy : lots of new growth this spring, but some dead branches on the bottoms, after the colder than usual winter. I am in eastern Pennsylvania, USA. Should I pull out the vines ? The owner isn't doing anything about it. I don't want to contact the owner as he is generally unresponsive.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.