message: gapi(test): fix check
diff: @@ -160,8 +160,8 @@ TEST_P(MulDoubleTest, AccuracyTest)
  CV_MAT_DEPTH(out_mat_ocv.type()) != CV_64F)
  {
  // integral: allow 1% of differences, and no diffs by >1 unit
  + EXPECT_LE(cvtest::norm(out_mat_gapi, out_mat_ocv, NORM_INF), 1);
  EXPECT_LE(cvtest::norm(out_mat_gapi, out_mat_ocv, NORM_L1 | NORM_RELATIVE), 0.01);
  - EXPECT_LE(cvtest::norm(out_mat_gapi, out_mat_ocv, NORM_L1), 1);
  }
  else
  {
  