John Dubois - Notice not to destroy evidence. What evidence? Ongoing lawsuit between John Dubois and Miami-Dade County

I was served this notice at Village Hall by Vice Mayor DuBois' personal attorney just prior to the start of the State of the Village Address.  I certainly will maintain anything in my possession, but I am at a loss to understand what information I could possibly offer John DuBois or his attorney. Can anyone assist me with understanding why the Palmetto Bay Vice Mayor wants to involve me in his personal litigation against Miami-Dade County?  This appears to be his ongoing fight, not mine.