SoftwareSerial with ATTiny84 using ATtiny library

Using Arduino Microcontrollers
70

After deleting line 55, I get this error:

D:\arduino-1.01\arduino-1.0.1-windows (1)\arduino-1.0.1\libraries\TinyDebugKnockBang/TinyDebugKnockBang.h:152: error: expected ',' or '...' before '*' token