Remove migration note about selection widgets and dictionaries#3583

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jasongrout merged 2 commits intojupyter-widgets:masterfrom

jasongrout:migrationitems

Sep 2, 2022

Commits on Sep 2, 2022

Remove migration note about selection widgets and dictionaries, now that we reverted the change.
jasongrout
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Change typescript migration example to js
jasongrout
committed