Ready:
* The following methods previously accepted an optional user parameter. Not passing a user was hard deprecated in 1.35. Support for not passing a user has now been removed:
  - constructing a FileDeleteForm
  - constructing a LocalFileDeleteBatch (the constructor signature changed to support requiring a user, and the entire old signature now removed)
  - ArchivedFile::userCan
  - FileDeleteForm::doDelete
  - LocalFile::userCan
  - LogEventsList::userCan
  - LogEventsList::userCanBitfield
  - LogEventsList::userCanViewLogType
  - LogPage::addEntry
  - PatrolLog::record
  - Revision::newNullRevision (note however, that the entire class is soft deprecated, and RevisionStore::newNullRevision should be used instead)
  - Title::getNotificationTimestamp
  - WikiPage::insertProtectNullRevision
* The following functions all accept an optional audience parameter and an optional user parameter. If the audience is FOR_THIS_USER and no user is passed, they fallback to $wgUser. Not passing a user when one is needed is deprecated
  - LogEventsList::getExcludeClause
  - Revision::getComment
  - Revision::getUser
  - Revision::getUserText
  - WikiPage::getComment
  - WikiPage::getCreator
  - WikiPage::getUser
  - WikiPage::getUserText
* The old SpecialPageFactory (the one in SpecialPageFactory_deprecated.php, not the one at MediaWiki\SpecialPage\SpecialPageFactory), which made use of $wgUser and was previously deprecated, have been removed entirely
* The Revision class was soft deprecated entirely 1.31. Some of its methods were individually hard deprecated, and have been removed
  - base36Sha1
  - countByPageId
  - countByTitle
  - getArchiveQueryInfo
  - getParentLengths
  - getQueryInfo
  - getRecentChange
  - getTextId
  - getTimestampFromId
  - isUnpatrolled
  - loadFromPageId (along with RevisionStore::loadRevisionFromPageId)
  - loadFromTimestamp (along with RevisionStore::loadRevisionFromTimestamp)
  - loadFromTitle (along with RevisionStore::loadRevisionFromTitle)
  - newFromPageId
  - newFromRow
  - newKnownCurrent
  - setTitle
  - setUserIdAndName
  - userCan
  - userCanBitfield
  - userWasLastToEdit
* The following methods have been removed entirely:
  - ApiTestCase::doLogin
  - Article::doDeleteArticle
  - Article::doDeleteArticleReal
  - Article::getComment
  - Article::getCreator
  - Article::getUser
  - Article::getUserText
  - Article::insertProtectNullRevision
  - LocalFile::delete
  - LocalFile::deleteOld
  - PageArchive::undelete
  - RecentChange::markPatrolled
  - Title::getUserPermissionsErrors
  - Title::quickUserCan
  - Title::userCan
  - WebRequest::getLimitOffset
  - WikiPage::doDeleteArticle
 * The following hooks, soft deprecated in 1.24 and hard deprecated in 1.35, have been removed
  - APIQueryInfoTokens
  - APIQueryRecentChangesTokens
  - APIQueryRevisionsTokens
  - APIQueryUsersTokens
  - ApiTokensGetTokenTypes
* LogEventsList::typeAction previously accepted an optional right parameter, and checked if the context user ($wgUser) had that right. Passing a right was hard deprecated in 1.35, and support for checking against a right has now been removed.

Not ready yet:
Revision::getRevisionText