Revert "Issue #2916154 by drpal, dawehner, xjm: JS codestyle: no-multi-assign"

core/.eslintrc.passing.json

core/misc/displace.es6.js

core/misc/displace.js

core/misc/states.es6.js

core/misc/states.js

core/misc/tabledrag.es6.js

core/misc/tabledrag.js

core/modules/ckeditor/js/ckeditor.admin.es6.js

core/modules/ckeditor/js/ckeditor.admin.js

core/modules/contextual/js/contextual.toolbar.es6.js

core/modules/contextual/js/contextual.toolbar.js

core/modules/quickedit/js/editors/formEditor.es6.js

core/modules/quickedit/js/editors/formEditor.js

core/modules/quickedit/js/editors/plainTextEditor.es6.js

core/modules/quickedit/js/editors/plainTextEditor.js

core/modules/toolbar/js/toolbar.es6.js

core/modules/toolbar/js/toolbar.js