Remove dead code.

test/unit/utFindInvalidData.cpp

@@ -110,8 +110,6 @@ TEST_F(utFindInvalidDataProcess, testStepNegativeResult) {
         mMesh->mNormals[i].x = mMesh->mNormals[i].y = mMesh->mNormals[i].z =0;
         mMesh->mBitangents[i].x = mMesh->mBitangents[i].y = mMesh->mBitangents[i].z = 0;
     }
-    //::memset(mMesh->mNormals, 0, mMesh->mNumVertices * sizeof(aiVector3D));
-    //::memset(mMesh->mBitangents, 0, mMesh->mNumVertices * sizeof(aiVector3D));
 
     mMesh->mTextureCoords[2][455] = aiVector3D(std::numeric_limits<float>::quiet_NaN());