RITZ THEATREMID-WINTER FLOWER SHOW OPENS TOMORROW (SATURDAY, JANUARY 4)J. B. Koppel, manager of the Ritz theatre, which is owned by J. Lasker and sons, wishes to emphatically deny the rumor that the Ritz has been purchased by Balaban and ICatz.. The. Ritz is the fourth link in theLasker chain and hasrecently been redecorated, refurnished and equipped for Western Electric sound.The mammoth midwinter flower show is scheduled to open tomorrow (Saturday, January 4) and will continue until January 11. The flower display will le in the foyer and mezzanine J. B. KoppEl floors and has been