Now that MediaCodec marks buffers as having host endianness remove obsolete code.

Change-Id: If9b1779b0a4d23728059a16bfbd4f5ba685436a6
diff --git a/tests/tests/media/src/android/media/cts/DecoderTest.java b/tests/tests/media/src/android/media/cts/DecoderTest.java
index 45da232..a63eaac 100644
--- a/tests/tests/media/src/android/media/cts/DecoderTest.java
+++ b/tests/tests/media/src/android/media/cts/DecoderTest.java
@@ -162,7 +162,6 @@
             if (res >= 0) {
                 int outputBufIndex = res;
                 ByteBuffer buf = codecOutputBuffers[outputBufIndex];
-                buf.order(null);
 
                 // check the waveform matches within the specified max error
                 for (int i = 0; i < info.size; i += 2) {