message: We should not be comparing floats with tolerance = 0.
  * Changed the comparison to use 1e-5.
  * manually confirmed that the following command now passes:
  ```
  make -f tensorflow/lite/micro/tools/make/Makefile TARGET=xtensa OPTIMIZED_KERNEL_DIR=xtensa TARGET_ARCH=fusion_f1 XTENSA_CORE=F1_190305_swupgrade test_kernel_l2_pool_2d_test -j8
  ```
diff: @@ -105,7 +105,6 @@ TF_LITE_MICRO_TEST(FloatPoolingOpTestL2Pool) {
  constexpr int kOutputCount = std::extent<decltype(kExpect)>::value;
  float output_data[kOutputCount];
  tflite::testing::L2Pool2DTestParams params;
  - params.compare_tolerance = 0;
  tflite::testing::TestL2Pool2D(params, kInputDims, kInput, kExpectDims,
  kExpect, output_data);
  @@ -174,7 +173,6 @@ TF_LITE_MICRO_TEST(FloatPoolingOpTestL2PoolPaddingSame) {
  float output_data[kOutputCount];
  tflite::testing::L2Pool2DTestParams params;
  params.padding = kTfLitePaddingSame;
  - params.compare_tolerance = 0;
  tflite::testing::TestL2Pool2D(params, kInputDims, kInput, kExpectDims,
  kExpect, output_data);
  