Update BackupTest.kt

(cherry picked from commit 00b1b097a7ae744f69f47436f4d764ce8cf4b111)

app/src/test/java/eu/kanade/tachiyomi/data/backup/BackupTest.kt

@@ -389,7 +389,6 @@ class BackupTest {
         val track = TrackImpl()
         track.title = manga.title
         track.manga_id = manga.id!!
-        track.remote_id = 1
         track.sync_id = 1
         return track
     }