'exclusive' browser versions - is this still needed?

[jakearchibald]

browser-compat-data/schemas/browsers-schema.md

Line 72 in 8f04442

- `exclusive`: This is an exclusive release (for example on a flagship device), not generally available.

This isn't used in the data. Should it be removed?

[caugner]

FWIW, it looks like this was used for Samsung Internet, and the last occurrence was removed in #2356.