Remove unused ffi closure compat code
Remove unused ffi closure compat code

tduehr/ffi,sparkchaser/ffi,yghannam/ffi,MikaelSmith/ffi,ffi/ffi,sparkchaser/ffi,yghannam/ffi,ffi/ffi,ferventcoder/ffi,ferventcoder/ffi,mvz/ffi,tduehr/ffi,sparkchaser/ffi,MikaelSmith/ffi,majioa/ffi,yghannam/ffi,ffi/ffi,ferventcoder/ffi,tduehr/ffi,MikaelSmith/ffi,yghannam/ffi,mvz/ffi,MikaelSmith/ffi,yghannam/ffi,majioa/ffi,majioa/ffi,sparkchaser/ffi,mvz/ffi,ferventcoder/ffi,tduehr/ffi,majioa/ffi,mvz/ffi