Remove unused entries in InputMethodSettings API.

This private API is meant for exclusive use by CrOS 1P Virtual
Keyboard (VK) + IME extension (in internal repo). It doesn't need
to declare typings for all data entries; only those needed by CrOS
1P VK+IME extension are required.

Indeed, it's already the case that these do not include all available
entries, while many entries are declared here but no longer used by
CrOS 1P VK+IME extension, because they're obsolete, broken, or simply
not needed. Those unused entries are being removed in this CL.

Unused or unnecessary entries incur maintenance cost, as they must
always match precisely what's defined by CrOS Settings UI and
actually available in CrOS Prefs storage.

Bug: None
Change-Id: I5e0e0e20b1d0ac5c9d1e792cdbc270d0e6b9154b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7140820
Reviewed-by: Jimmy Gong <[email protected]>
Reviewed-by: Darren Shen <[email protected]>
Commit-Queue: Bao-Duy Tran <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1546968}
NOKEYCHECK=True
GitOrigin-RevId: 67bc5741985963e7b9b470c40cb3f5776cd9262f
1 file changed