K 10 svn:author V 6 eadler K 8 svn:date V 27 2018-05-13T03:37:31.350399Z K 7 svn:log V 311 Remove some old OpenSearch plugins These have not worked in some time and no one has complained, so the value in fixing them is clearly limited as well. Neither modern Firefox nor Chrome supports OpenSearch so this entire section will be removed in the next commit. Separate commits for tracking and clarity. END