Update file matrix_multiplication.h

code/matrix_multiplication.h

@@ -92,7 +92,6 @@ void matrixMultiplyAVX2(const std::complex<float>* a,
   __m256i a_4_ind = _mm256_set_epi32(7, 7, 7, 7, 3, 3, 3, 3);
   __m256i b_4_ind = _mm256_set_epi32(6, 7, 4, 5, 6, 7, 4, 5);
 
-  __m256 inv = _mm256_set_ps(1., -1., 1., -1., 1., -1., 1., -1.);
   __m256 a_1 = _mm256_permutevar8x32_ps(a_m, a_1_ind);
   __m256 b_1 = _mm256_permutevar8x32_ps(b_m, b_1_ind);