Zipalign: Remove unused variables

Remove unused variable resulting in compilation warnings.
Remove unused temporary variable.

Bug: NA
Test: zipalign_tests
Change-Id: Ic2236b5878074f0c2537ab0b9f94dfd9c42225d8
diff --git a/tools/zipalign/ZipFile.cpp b/tools/zipalign/ZipFile.cpp
index 1e3c413..6037d59 100644
--- a/tools/zipalign/ZipFile.cpp
+++ b/tools/zipalign/ZipFile.cpp
@@ -654,7 +654,7 @@
 {
     ZipEntry* pEntry = NULL;
     status_t result;
-    long lfhPosn, startPosn, endPosn, uncompressedLen;
+    long lfhPosn, uncompressedLen;
 
     if (mReadOnly)
         return INVALID_OPERATION;
@@ -690,7 +690,6 @@
      */
     lfhPosn = ftell(mZipFp);
     pEntry->mLFH.write(mZipFp);
-    startPosn = ftell(mZipFp);
 
     /*
      * Copy the data over.
@@ -741,18 +740,13 @@
     }
 
     /*
-     * Update file offsets.
-     */
-    endPosn = ftell(mZipFp);
-
-    /*
      * Success!  Fill out new values.
      */
     pEntry->setLFHOffset(lfhPosn);
     mEOCD.mNumEntries++;
     mEOCD.mTotalNumEntries++;
     mEOCD.mCentralDirSize = 0;      // mark invalid; set by flush()
-    mEOCD.mCentralDirOffset = endPosn;
+    mEOCD.mCentralDirOffset = ftell(mZipFp);
 
     /*
      * Go back and write the LFH.