message: resgen: remove unused flag.
diff: @@ -326,7 +326,9 @@ function(get_resgen_vars ARCHIVE_DIR ARCHIVE_NAME)
  ${ARCHIVE_DIR}/${ARCHIVE_NAME}.apple.S
  ${ARCHIVE_DIR}/${ARCHIVE_NAME}.h
  )
  + if (IOS)
  set(ASM_ARCH_FLAG "-arch ${DIST_ARCH}")
  + endif()
  if (APPLE)
  set(ASM_SUFFIX ".apple")
  endif()
  