remove unnecessary code.

src/onnx/onnx.cpp

@@ -470,17 +470,6 @@ struct onnx_parser
             transb = parse_value(attributes.at("transB")).at<bool>();
         }
 
-        // beginning or end of both args have dimension 1, need to squeeze
-        // before calling gemm, then doing unsqueeze after getting results
-        std::size_t num_squeeze = args[0]->get_shape().lens().size();
-        if(num_squeeze > 2)
-        {
-            std::vector<int64_t> vec_axises(num_squeeze - 2);
-            std::iota(vec_axises.begin(), vec_axises.end(), 0);
-            args[0] = prog.add_instruction(op::squeeze{vec_axises}, args[0]);
-            args[1] = prog.add_instruction(op::squeeze{vec_axises}, args[1]);
-        }
-
         std::vector<int64_t> perm = {1, 0};
         auto l1 = (transa) ? prog.add_instruction(op::transpose{perm}, args[0]) : args[0];
         auto l2 = (transb) ? prog.add_instruction(op::transpose{perm}, args[1]) : args[1];
@@ -489,13 +478,6 @@ struct onnx_parser
             if(beta != 0.f)
             {
                 auto l3 = prog.add_instruction(op::dot{alpha}, l1, l2);
-                if(num_squeeze > 2)
-                {
-                    std::vector<int64_t> vec_axises(num_squeeze - 2);
-                    std::iota(vec_axises.begin(), vec_axises.end(), 0);
-                    l3 = prog.add_instruction(op::unsqueeze{vec_axises}, l3);
-                }
-
                 auto l4 = args[2];
                 if(l4->get_shape().scalar()) // ignore args[2] (no C value added to alpha*A*B)
                     return l3;
@@ -510,12 +492,6 @@ struct onnx_parser
         }
 
         auto dot_res = prog.add_instruction(op::dot{alpha, beta}, l1, l2);
-        if(num_squeeze > 2)
-        {
-            std::vector<int64_t> vec_axises(num_squeeze - 2);
-            std::iota(vec_axises.begin(), vec_axises.end(), 0);
-            dot_res = prog.add_instruction(op::unsqueeze{vec_axises}, dot_res);
-        }
 
         return dot_res;
     }