Removed useless line in belongsTo

Author: jenssegers

src/Jenssegers/Mongodb/Relations/BelongsTo.php

@@ -14,8 +14,6 @@ public function addConstraints()
 			// For belongs to relationships, which are essentially the inverse of has one
 			// or has many relationships, we need to actually query on the primary key
 			// of the related models matching on the foreign key that's on a parent.
-			$table = $this->related->getTable();
-
 			$this->query->where($this->otherKey, '=', $this->parent->{$this->foreignKey});
 		}
 	}