No obligation of a partner of a limited partnership to the limited partnership, or to a partner of the limited partnership, arising under the partnership agreement or a separate agreement or writing, and no note, instrument or other writing evidencing any such obligation of a partner, shall be subject to the defense of usury, and no partner shall interpose the defense of usury with respect to any such obligation in any action.
69 Del. Laws, c. 258, § 35; 78 Del. Laws, c. 272, § 7.