Unused import.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@1453399 13f79535-47bb-0310-9956-ffa450edef68
Still more diagnostics for #54641.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@1453400 13f79535-47bb-0310-9956-ffa450edef68