Fix 'potential memory leak' compiler warning.

This CL fixes the following compiler warning:

frameworks/av/media/libstagefright/SampleTable.cpp:569:9: warning:
 Memory allocated by 'new[]' should be deallocated by 'delete[]', not
 'delete'.

Bug: 33137046
Test: Compiled with change; no warning generated.

Change-Id: I29abd90e02bf482fa840d1f7206ebbdacf7dfa37
(cherry picked from commit 158c197b668ad684f92829db6a31bee3aec794ba)
(cherry picked from commit 37c428cd521351837fccb6864f509f996820b234)

SampleTable::~SampleTable() {
 delete[] mSampleToChunkEntries;
    mSampleToChunkEntries = NULL;

 delete[] mSyncSamples;
    mSyncSamples = NULL;

 delete[] mTimeToSample;
    mTimeToSample = NULL;

 delete mCompositionDeltaLookup;
    mCompositionDeltaLookup = NULL;

 delete[] mCompositionTimeDeltaEntries;
    mCompositionTimeDeltaEntries = NULL;

 delete[] mSampleTimeEntries;
    mSampleTimeEntries = NULL;

 delete mSampleIterator;
    mSampleIterator = NULL;
}

SampleTable::~SampleTable() {
 delete[] mSampleToChunkEntries;
    mSampleToChunkEntries = NULL;

 delete[] mSyncSamples;
    mSyncSamples = NULL;

 delete[] mTimeToSample;
    mTimeToSample = NULL;

 delete mCompositionDeltaLookup;
    mCompositionDeltaLookup = NULL;

 delete[] mCompositionTimeDeltaEntries;
    mCompositionTimeDeltaEntries = NULL;

 delete[] mSampleTimeEntries;
    mSampleTimeEntries = NULL;

 delete mSampleIterator;
    mSampleIterator = NULL;
}
