Obsolete or unneeded database tables

Table migrated from https://phabricator.wikimedia.org/T54921
Table 	Extension/Source 	Recom. contact 	Status 	Task 	Notes
__wmf_checksums.ibd 	pt-table-checksum 	DBA 	To remove	 	But they are created by DBAs every time data checks run
_image_new.ibd 	pt-online-schema-change going wrong 	DBA 	Removed 	T171429	probably an alter table abandoned, drop where it exists
arbcom1_vote.ibd 	E:BoardVote 	@tstarling 	Keep 	 	Data to be archived. Once done, this table can be dropped.
blob_orphans.ibd blob_tracking.ibd	trackBlobs.php 	@tstarling 	Removed 	T59186 	"Tracking table for blob rows that aren't tracked by the text table" related to blob_tracking
bv2009_edits.ibd 	E:SecurePoll 	@tstarling 	To remove	 	These bv_*edits tables are intermediate data (edit counts) generated by SecurePoll CLI scripts. The voter lists generated from them are stored in securepoll_lists. Probably not worth archiving since they were generated from archived edit data.
bv2011_edits.ibd 	E:SecurePoll 	@tstarling 	To remove	 	
bv2015_edits.ibd 	E:SecurePoll 	@tstarling 	To remove	 	
click_tracking.ibd 	E:Click_Tracking 	? 	Removed 	T115982	Dep. of E:ArticleFeedback
click_tracking_events.ibd 	E:Click_Tracking 	? 	Removed 	T115982	Dep. of E:ArticleFeedback
click_tracking_user_properties 	E:Click_Tracking 	? 	Removed 	T115982	Dep. of E:ArticleFeedback
cur.ibd 	MW Core 	@tstarling 	Keep 	 	Need to audit text, ar_text for HistoryBlobCurStub objects
edit_page_tracking.ibd 	E:EditPageTracking 	 	Removed 	T57385 	
email_capture.ibd 	E:Email_Capture 	? 	Removed 	T57676 	Dep. of E:ArticleFeedback
ep_cas.ibd 	E:EducationProgram 	@JeroenDeDauw 	Keep 	 	Actively deployed
ep_instructors.ibd 	E:EducationProgram 	@JeroenDeDauw 	Keep 	 	Actively deployed
ep_oas.ibd 	E:EducationProgram 	@JeroenDeDauw 	Keep 	 	Actively deployed
ep_revisions.ibd 	E:EducationProgram 	@JeroenDeDauw 	Keep 	 	Actively deployed
exarchive.ibd 	MW Core 	? 	? 	 	(old copy of archive table?)
exrevision.ibd 	MW Core 	? 	? 	 	(old copy of revision table?)
filejournal.ibd 	MW Core 	@aaron 	Removed 	T51195 	aaron committed this back in rSVN113704: [FileBackend] - I guess Wikimedia isn't using it?
flaggedimages.ibd 	E:FlaggedRevs 	@aaron 	 	 	
flaggedrevs_stats.ibd 	E:FlaggedRevs 	@aaron 	 	 	
flaggedrevs_stats2.ibd 	E:FlaggedRevs 	@aaron 	 	 	
flaggedtemplates.ibd 	E:FlaggedRevs 	@aaron 	 	 	
global_block_whitelist.ibd 	E:GlobalBlocking 	@Legoktm/@Glaisher	Keep 	 	Actively used
hidden.ibd 	E:Oversight 	@Krenair 	? 	 	This should theoretically be obsoleted by the removal of the Oversight extension in T34628, but let me double check.
interwiki.ibd 	MW Core (not used by WMF) 	 	Keep 	T169376	Just truncate. (done)
job.ibd 	MW Core (not used by WMF) 	 	Keep 	T169377	Just truncate. (done)
l10n_cache.ibd 	MW Core (not used WMF deployment) 	 	Keep 	T169375	Just truncate. (done)
linkscc.ibd 	MW Core (removed in 1.5) 	@tstarling 	Removed 	T192056	
localisation.ibd 	Extension:LocalisationUpdate (table removed)	 	Removed 	T119811	
localisation_file_hash.ibd 	Extension:LocalisationUpdate (table removed)	 	Removed 	T119811	
long_run_profiling.ibd 	MW Core 	@tstarling 	Removed 	T194661	@tstarling made this as a temporary copy of the profiling table
mark_as_helpful.ibd 	E:MarkAsHelpful 	 	Removed 	T151655	
mathoid.ibd 	E:Math 	@Physikerwelt 	To remove	 	Now stored in Restbase T74240: Remove PNG only rendering mode
moodbar_feedback.ibd 	E:MoodBar 	 	Removed 	T153033	Undeployed from WMF
moodbar_feedback_response 	E:MoodBar 	 	Removed 	T153033	Undeployed from WMF
msg_resource.ibd 	MW Core (removed in 1.27) 	Krinkle 	Removed 	T194663	Removed from core per T113092
msg_resource_links.ibd 	MW Core (removed in 1.27) 	Krinkle 	Removed 	T194663	Removed from core per T113092
old_growth.ibd 	 	 	Removed 	T115982	
pagetriage_tags.ibd 	E:PageTriage 	 	Keep 	 	Appears to be used, but only for look-ups. Could be migrated to a data/config file.
pif_edits.ibd 	 	 	? 	 	
povwatch_log.ibd 	E:PovWatch 	 	Removed 	T54924 	
povwatch_subscribers.ibd 	E:PovWatch 	 	Removed 	T54924 	
pr_index.ibd 	E:ProofreadPage 	 	Keep 	 	Table may exist on wikis that don't use Extension. Can be removed from those
prefstats.ibd 	E:PrefStats 	 	Removed 	T154490	
prefswitch_survey.ibd 	E:PrefSwitch 	 	Removed 	T173439	
profiling 	MW CoreMW (removed in 1.5) 	@Reedy 	To remove	T266125	Old table removed: T231366
reader_feedback 	E:ReaderFeedback 	@Reedy 	Removed 	T174586	
reader_feedback_history 	E:ReaderFeedback 	@Reedy 	Removed 	T174586	
reader_feedback_pages 	E:ReaderFeedback 	@Reedy 	Removed 	T174586	
searchindex.ibd 	MW Core (unused by WMF) 	@demon 	Keep 	T167978	Truncate only. (done)
securepoll_cookie_match.ibd 	E:SecurePoll 	@tstarling 	Keep 	 	
securepoll_elections.ibd 	E:SecurePoll 	@tstarling 	Keep 	 	
securepoll_entity.ibd 	E:SecurePoll 	@tstarling 	Keep 	 	
securepoll_lists.ibd 	E:SecurePoll 	@tstarling 	Keep 	 	
securepoll_msgs.ibd 	E:SecurePoll 	@tstarling 	Keep 	 	
securepoll_options.ibd 	E:SecurePoll 	@tstarling 	Keep 	 	
securepoll_properties.ibd 	E:SecurePoll 	@tstarling 	Keep 	 	
securepoll_questions.ibd 	E:SecurePoll 	@tstarling 	Keep 	 	
securepoll_strike.ibd 	E:SecurePoll 	@tstarling 	Keep 	 	
securepoll_votes.ibd 	E:SecurePoll 	@tstarling 	Keep 	 	
site_identifiers.ibd 	MW Core 	 	Keep 	 	Actively in use
sites.ibd 	MW Core 	 	Keep 	 	Actively in use
tag_summary.ibd 	MW Core 	@Ladsgroup 	To remove	T209525	Deprecated, use change_tag instead
transcache.ibd 	MW Core (not used in WMF) 	 	Keep 	 	Core table, just truncate
transcode.ibd 	E:TimedMediaHandler 	@brion 	Keep 	 	Actively used
updatelog.ibd 	MW Core (not used in WMF) 	@demon 	Keep 	T174804	Core table, just truncate
valid_tag.ibd 	MW Core 	@Ladsgroup 	Removed 	T212254	This is in use by MW core for change tagging
vote_log.ibd 	E:BoardVote 	@tstarling 	Keep 	 	Data will be archived, once done, it may be dropped.