Removed duplicate declaration of the same operators since the

same operators were added in both this MR and MR!1391 to address
the same issue.

library/LibUtilities/SimdLib/avx2.hpp

@@ -233,8 +233,6 @@ template <typename T> struct avx2Int8
         _data = _mm256_set1_epi32(rhs);
     }
 
-    inline avx2Int8 &operator=(const avx2Int8 &) = default;
-
     // subscript
     // subscriptsoperators are convienient but expensive
     // should not be used in optimized kernels
@@ -345,8 +343,6 @@ template <typename T> struct avx2Long4
         _data = _mm256_set1_epi64x(rhs);
     }
 
-    inline avx2Long4 &operator=(const avx2Long4 &) = default;
-
     // subscript
     // subscript operators are convienient but expensive
     // should not be used in optimized kernels
@@ -518,9 +514,6 @@ struct avx2Double4
         return tmp[i];
     }
 
-    // unary ops
-    inline avx2Double4 &operator=(const avx2Double4 &) = default;
-
     inline void operator+=(avx2Double4 rhs)
     {
         _data = _mm256_add_pd(_data, rhs._data);
@@ -778,9 +771,6 @@ struct avx2Float8
         return tmp[i];
     }
 
-    // unary ops
-    inline avx2Float8 &operator=(const avx2Float8 &) = default;
-
     inline void operator+=(avx2Float8 rhs)
     {
         _data = _mm256_add_ps(_data, rhs._data);

library/LibUtilities/SimdLib/avx512.hpp

@@ -239,8 +239,6 @@ template <typename T> struct avx512Int16
         _data = _mm512_set1_epi32(rhs);
     }
 
-    inline avx512Int16 &operator=(const avx512Int16 &) = default;
-
     // subscript
     // subscript operators are convienient but expensive
     // should not be used in optimized kernels
@@ -356,8 +354,6 @@ template <typename T> struct avx512Long8
         _data = _mm512_set1_epi64(rhs);
     }
 
-    inline avx512Long8 &operator=(const avx512Long8 &) = default;
-
     // subscript
     // subscript operators are convienient but expensive
     // should not be used in optimized kernels
@@ -512,9 +508,6 @@ struct avx512Double8
         return tmp[i];
     }
 
-    // unary ops
-    inline avx512Double8 &operator=(const avx512Double8 &) = default;
-
     inline void operator+=(avx512Double8 rhs)
     {
         _data = _mm512_add_pd(_data, rhs._data);
@@ -770,9 +763,6 @@ struct avx512Float16
         return tmp[i];
     }
 
-    // unary ops
-    inline avx512Float16 &operator=(const avx512Float16 &) = default;
-
     inline void operator+=(avx512Float16 rhs)
     {
         _data = _mm512_add_ps(_data, rhs._data);

library/LibUtilities/SimdLib/scalar.hpp

@@ -189,8 +189,6 @@ template <typename T, typename> struct scalarT
         return _data;
     }
 
-    inline scalarT &operator=(const scalarT &) = default;
-
     // unary ops
     inline void operator+=(scalarT<T> rhs)
     {