[04:57:31] <wikibugs>	 10Traffic, 10MediaWiki-File-management, 10SRE, 10Patch-For-Review, 10Technical-Debt: Remove IEContentAnalyzer - https://phabricator.wikimedia.org/T309787 (10Legoktm) @taavi suggested adding the header in core's pre-existing `images/.htaccess`; I'll submit a patch for that.