Removes unused variables
Removes unused variables

alexgorbatchev/node-crc,IvanSanchez/node-crc,IvanSanchez/node-crc,alexgorbatchev/node-crc,alexgorbatchev/node-crc,albertjleo/node-crc,IvanSanchez/node-crc,IvanSanchez/node-crc,alexgorbatchev/node-crc,alexgorbatchev/node-crc,albertjleo/node-crc,albertjleo/node-crc