remove unused var in a test

remove include from unittest.cc that is already done by unittest.h

TBR=harryjin@google.com
BUG=libyuv:530

Review URL: https://codereview.chromium.org/1513263004 .

README.chromium

 Name: libyuv
 URL: http://code.google.com/p/libyuv/
-Version: 1552
+Version: 1553
 License: BSD
 License File: LICENSE
 

include/libyuv/version.h

@@ -11,6 +11,6 @@
 #ifndef INCLUDE_LIBYUV_VERSION_H_  // NOLINT
 #define INCLUDE_LIBYUV_VERSION_H_
 
-#define LIBYUV_VERSION 1552
+#define LIBYUV_VERSION 1553
 
 #endif  // INCLUDE_LIBYUV_VERSION_H_  NOLINT

unit_test/convert_test.cc

@@ -1709,7 +1709,6 @@ TEST_F(LibYUVConvertTest, FMT_PLANAR##To##FMT_B##_##FMT_C##N) {                \
                           dst_argb_b + OFF, kStrideB,                          \
                           kWidth, NEG kHeight);                                \
   }                                                                            \
-  int max_diff = 0;                                                            \
   /* Convert to a 3rd format in 1 step and 2 steps and compare  */             \
   const int kStrideC = kWidth * BPP_C;                                         \
   align_buffer_64(dst_argb_c, kStrideC * kHeight + OFF);                       \

unit_test/unit_test.cc

@@ -15,7 +15,6 @@
 #include <cstring>
 
 #include "gflags/gflags.h"
-#include "testing/gtest/include/gtest/gtest.h"
 
 // Change this to 1000 for benchmarking.
 // TODO(fbarchard): Add command line parsing to pass this as option.