This is a train stop "Strelište" (the stop can be seen on satellite image). It is not a train station since there's only one track. Since January 4th, trains operate (again) between Pančevo and Belgrade. The news about it is available here (in Serbian): https://rs.n1info.com/vesti/ponovo-saobracaju-vozovi-izmedju-beograda-i-panceva/