removed unneeded variables and functions
removed unneeded variables and functions

thomaschaaf/node-ftdi,thomaschaaf/node-ftdi,thomaschaaf/node-ftdi,KABA-CCEAC/node-ftdi,thomaschaaf/node-ftdi,KABA-CCEAC/node-ftdi,KABA-CCEAC/node-ftdi,KABA-CCEAC/node-ftdi,thomaschaaf/node-ftdi,KABA-CCEAC/node-ftdi