Remove unused imports.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/email/trunk@1606697 13f79535-47bb-0310-9956-ffa450edef68
Add missing '@Deprecated' annotation.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/email/trunk@1606700 13f79535-47bb-0310-9956-ffa450edef68
Use final.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/email/trunk@1606709 13f79535-47bb-0310-9956-ffa450edef68
Remove extra parens (for example, this is not C we do not have to worry about mixing ints and booleans).

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/email/trunk@1606710 13f79535-47bb-0310-9956-ffa450edef68