Revert change the attempted to fix https://bz.apache.org/bugzilla/show_bug.cgi?id=37466 The Servlet container should return content for a HEAD request and so there is no need to coerce the HTTP method to GET to try an fool it into doing so.
tomcat/taglibs/standard/trunk/impl/src/main/java/org/apache/taglibs/standard/tag/common/core/ImportSupport.java