private void deleteCategory() {
            CategoryModel currentCategory = categoryModels.get(getAdapterPosition());
            SharedPreferences spCategories = context.getSharedPreferences("spCategories",
                    Context.MODE_PRIVATE);
            spCategories.edit().remove(currentCategory.getCategoryId()).apply();
            categoryModels.remove(currentCategory);
            Toast.makeText(context, R.string.preset_deleted,
                    Toast.LENGTH_LONG).show();
            notifyDataSetChanged();
            ElementsRV.deleteItem(context);
        }

public static void deleteItem(Context context){
        SharedPreferences sp = context.getSharedPreferences("spCategories", Context.MODE_PRIVATE);
        for (int i = 0; i < recipesModelList.size(); i++){
            if (!sp.contains(recipesModelList.get(i).getCategoryName())){
                recipesModelList.get(i).setCategoryName("");
                recipesModelList.get(i).setCategoryBtnColor(0);
                recipesModelList.get(i).setCategoryTextColor(0);
                notifyItemChanged(i); // Non-static method 'notifyItemChanged(int)' cannot be referenced from a static context
            }
        }
    }