chore: remove outdated comment about fuzzy matching python versions (#…

…1521)

Now that we're using a real PEP440 library, there's no need for this
comment.

Signed-off-by: Will Murphy <will.murphy@anchore.com>

grype/version/constraint.go

@@ -20,11 +20,6 @@ func GetConstraint(constStr string, format Format) (Constraint, error) {
  case RpmFormat:
  return newRpmConstraint(constStr)
  case PythonFormat:
- // This is specific to PythonFormat so that it adheres to PEP440 and its odd corner-cases
- // It is significantly odd enough, that the fuzzyConstraint is the best bet to compare versions.
- // Although this will work in most cases, some oddities aren't supported, like:
- // 1.0b2.post345.dev456 which is allowed by the spec. In that case (a dev release of a post release)
- // the comparator will fail. See https://www.python.org/dev/peps/pep-0440
  return newPep440Constraint(constStr)
  case KBFormat:
  return newKBConstraint(constStr)