fix(src/atlas): remove the limitation that the input of the om model must be 4-dimensional

GitOrigin-RevId: ab3fce058e8ce1fa47e05142170b06a33bdcbf95

src/opr/impl/atlas_runtime_op.cpp

@@ -40,9 +40,6 @@ TensorShape acl_shape_to_mgb_shape_for_input(
     MGB_MARK_USED_VAR(aipp_input_fmt);
     TensorShape ret;
     ret.ndim = acl_shape.dimCount;
-    mgb_assert(
-            ret.ndim == 4, "Unexpected ndim form aclmdlIODims expected 4, but got %zu",
-            ret.ndim);
     for (size_t i = 0; i < ret.ndim; ++i) {
         ret[i] = acl_shape.dims[i];
     }