Initially, it was suggested that this removal impacted Google’s synched Chrome bookmarks but further research reveals that’s not the case. Instead, the removals apply to Google’s saved feature.
This Google service allows users to save and organize links, similar to what Pinterest does. These link collections can be private or shared with third parties.
Bookmarks?
The initial bookmark confusion is likely caused by the fact that, in Google’s app, the saved icon (shown below) appears by default. When clicked, the page in question is added to a “favorite pages” collection, which some people see as a bookmark.
A feature I did not even know Google had. Somewhat confusingly, Google sends the user an email telling them exactly what link they removed from their collection was, so the user can then add the link into another bookmarking system…