Spotify is a place where you live your music and your artistic profile is your homepage on spotify.
REASON:
Your track is not visible on your profile because your track visibility depends upon your Fan following. Your track won't be available until more people listen to your music and the song that appears popular on your Spotify profile automatically ranked up after every 24 hours and then ranked based on all-time stream and the recent stream.
SOLUTION:
In the Spotify app go to the settings and turn off hide unplayable tracks. In the desktop app you can do this by going to preference and under playback there will be able to uncheck.
Now you will be able to see songs and remove them from the playlist if you want to, Spotify is not in control of what song are on their music services.
All the songs on Spotify are controlled by the artist its likely that the artist decides to remove their song or not.
