Use simple name for org.apache.hadoop.fs.FileSystem instead of FQN.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/vfs/trunk@1546269 13f79535-47bb-0310-9956-ffa450edef68
Useless parentheses.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/vfs/trunk@1546270 13f79535-47bb-0310-9956-ffa450edef68