Why might I want to remove the file in WordPress?

What is the file in a WordPress website? slot online gelora188_wpincludes_wlwmanifest xml ?xml version= encoding=utf-8 ?> manifest xmlns=http:schemas imageUrl> watermarkImageUrl>imageswlw slot troy ?xml version= encoding=utf-8 ?> manifest xmlns=http:schemas imageUrl> watermarkImageUrl>imageswlw

slot lucky777 ?xml version= encoding=utf-8 ?> manifest xmlns=http:schemas imageUrl> watermarkImageUrl>imageswlw