Update imports following TIKA-1361 changes, to match our current preference for explicit (not wildcard) imports

git-svn-id: https://svn.apache.org/repos/asf/tika/trunk@1613252 13f79535-47bb-0310-9956-ffa450edef68
I don't know what the android.util package is, nor why we would/wouldn't want it, but without marking it as optional the bundle tests cry...

git-svn-id: https://svn.apache.org/repos/asf/tika/trunk@1613254 13f79535-47bb-0310-9956-ffa450edef68