Remove some unnecessary parentheses.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/compress/trunk@1552741 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/main/java/org/apache/commons/compress/archivers/tar/TarArchiveInputStream.java b/src/main/java/org/apache/commons/compress/archivers/tar/TarArchiveInputStream.java
index 55cadf7..2f4ce6e 100644
--- a/src/main/java/org/apache/commons/compress/archivers/tar/TarArchiveInputStream.java
+++ b/src/main/java/org/apache/commons/compress/archivers/tar/TarArchiveInputStream.java
@@ -193,7 +193,7 @@
     @Override
     public long skip(long numToSkip) throws IOException {
 
-        long available = (entrySize - entryOffset);
+        long available = entrySize - entryOffset;
         numToSkip = Math.min(numToSkip, available);
 
         long skipped = IOUtils.skip(is, numToSkip);