removed lots of unnecessary PETSc interface and lots of commented out stuff too
removed lots of unnecessary PETSc interface and lots of commented out stuff too

PHASTA/phasta,matthb2/phasta,PHASTA/phasta,yangf4/phasta,yangf4/phasta,PHASTA/phasta,matthb2/phasta,SCOREC/phasta,yangf4/phasta,SCOREC/phasta,matthb2/phasta,SCOREC/phasta