removed VPI + nist code tweaks

...cisionIntegers/VariablePrecisionIntegers/@vpi/Edigits.mat

...nIntegers/VariablePrecisionIntegers/@vpi/_primeslist_.mat

...blePrecisionIntegers/VariablePrecisionIntegers/@vpi/abs.m

...lePrecisionIntegers/VariablePrecisionIntegers/@vpi/ceil.m

...tegers/VariablePrecisionIntegers/@vpi/comparemagnitudes.m

...lePrecisionIntegers/VariablePrecisionIntegers/@vpi/conv.m

...recisionIntegers/VariablePrecisionIntegers/@vpi/cumprod.m

...PrecisionIntegers/VariablePrecisionIntegers/@vpi/cumsum.m

...PrecisionIntegers/VariablePrecisionIntegers/@vpi/digits.m

...lePrecisionIntegers/VariablePrecisionIntegers/@vpi/disp.m

...recisionIntegers/VariablePrecisionIntegers/@vpi/display.m

...PrecisionIntegers/VariablePrecisionIntegers/@vpi/double.m

...ablePrecisionIntegers/VariablePrecisionIntegers/@vpi/eq.m

...blePrecisionIntegers/VariablePrecisionIntegers/@vpi/exp.m

...PrecisionIntegers/VariablePrecisionIntegers/@vpi/factor.m

...cisionIntegers/VariablePrecisionIntegers/@vpi/factorial.m

...lePrecisionIntegers/VariablePrecisionIntegers/@vpi/find.m

...blePrecisionIntegers/VariablePrecisionIntegers/@vpi/fix.m

...ePrecisionIntegers/VariablePrecisionIntegers/@vpi/floor.m

...lePrecisionIntegers/VariablePrecisionIntegers/@vpi/full.m