All licenses granted hereunder shall be revocable for cause at any time. Said licenses may be suspended for such period as the board of trustees may prescribe or may be revoked by the board of trustees, and such revocation or suspension shall be made on reasonable hearing prescribed by the board of trustees. "Cause" shall include any violations of this chapter. If there shall be two (2) convictions for violations of this chapter, whether such violations are the same or different provisions of this chapter, the second such conviction shall be cause for revocation of the license after hearing prescribed by the board of trustees. No refund fee shall be paid on revocation. (2006 Code)