Update ngx_rtmp_core_module.c
Update ngx_rtmp_core_module.c

clean useless code fragments.
UweM/nginx-rtmp-module,sergey-dryabzhinsky/nginx-rtmp-module,UweM/nginx-rtmp-module,sergey-dryabzhinsky/nginx-rtmp-module,sergey-dryabzhinsky/nginx-rtmp-module,UweM/nginx-rtmp-module