fix op test errors

src/frontends/paddle/src/op/matmul_v2.cpp

@@ -16,10 +16,6 @@ NamedOutputs matmul_v2(const NodeContext& node) {
     const auto mm = std::make_shared<default_opset::MatMul>(x, y, transpose_a, transpose_b);
 
     std::shared_ptr<Node> result = mm;
-    if (is_scalar(mm->get_output_partial_shape(0))) {
-        auto unsqueeze_scalar = default_opset::Constant::create(ov::element::i64, {}, {0});
-        result = std::make_shared<default_opset::Unsqueeze>(mm, unsqueeze_scalar);
-    }
     return node.default_single_output_mapping({result}, {"Out"});
 }
 

src/frontends/paddle/tests/op_fuzzy.cpp

@@ -287,9 +287,9 @@ static const std::vector<std::string> models{
     // std::string("loop_if_loop_complex/loop_if_loop_complex.pdmodel"),
     // disabed due to slice could not produce full dynamic shape
     // std::string("loop_if_tensor_array/loop_if_tensor_array.pdmodel"),
+    // std::string("loop_x/loop_x.pdmodel"),
     std::string("loop_t/loop_t.pdmodel"),
     std::string("loop_tensor_array/loop_tensor_array.pdmodel"),
-    std::string("loop_x/loop_x.pdmodel"),
     std::string("matmul_xt/matmul_xt.pdmodel"),
     std::string("matmul_xt_yt/matmul_xt_yt.pdmodel"),
     std::string("matmul_yt/matmul_yt.pdmodel"),