Compare two files and remove the common lines

Question

I have two files. File1 with data

DF2SVT-(.CD(),.CP(clk),.D(),.SDN(),.Q(na));

OAI3DSVT-(.A1(na),.A2(),.A3(),.B(),.ZN(y));

GLHSVT-(.D(v),.E(),.Q(y));

DCCDS