The curtains are closing on Josh Altman this fall as the reality star announces his time on Million Dollar Listing Los Angeles is over. Josh and his wife, Heather Altman, leave MDLLA after 13 years. The top realtor sums up the “bittersweet” departure in four words this November. Million Dollar Listing Los Angeles has seen big-time real estate agents Tracy Tutor, Josh Altman, and Josh Flagg appear alongside one another. During season 15 Altman and Flagg have been feuding. But, that’s reportedly not the reason for Altman leaving the show. Josh Altman’s Million Dollar Listing Los Angeles exitIt’s…