remove unused variables to avoid compilation warnings/errors
remove unused variables to avoid compilation warnings/errors

radut/nginx-module-vts,whatvn/nginx-module-vts,vozlt/nginx-module-vts,radut/nginx-module-vts,vozlt/nginx-module-vts,vozlt/nginx-module-vts,whatvn/nginx-module-vts,wandenberg/nginx-module-vts,wandenberg/nginx-module-vts,radut/nginx-module-vts,vozlt/nginx-module-vts,whatvn/nginx-module-vts,wandenberg/nginx-module-vts,whatvn/nginx-module-vts,wandenberg/nginx-module-vts,radut/nginx-module-vts