The default location for rollingcache.ccc for the windows store version is:
C:\Users\username\AppData\Local\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\LocalCache
If uninstalling MSFS from the Apps and features in windows 10 then it will remove the entire folder:
C:\Users\username\AppData\Local\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\
which should also have removed this file. However, for downloaded in game content that has been placed on the D drive then this uninstall method will indeed leave that data intact.
Does this answer your question?