Remove a silly array wrapper class in factor of std::vector.

Could be refactored more heavily, but then again I'm scared of bounds checking vector implementations...
What is an inopportune time to our PPCAnalyst?
Will it blow up the profiling result of from 0.05% to 0.06% in a debugging option that isn't enabled by default?
Not trusting the STL makes you sound like a PCSX2 dev suddenly.