Don't use time for checking WAR in retire stage

[0mega28]

We have to remove these line by fixing usage of r* in fu_status

CPU-Simulator/src/simulator/Retire.hpp

Lines 63 to 64 in 0cfca50

	if (fue.time < fue_f.time || !fue_f.busy)
	continue;

for reference of implementation of different stages of pipeline refer scoreboarding wikipedia

[0mega28]

Most probably we have to patch op_fetch and retire stage for fixing the issue