Revert "RWMH: Check proposal contains zero with enough margin"

This reverts commit 52c9554.
This check was not included by design in the MCMC overhaul
because it creates problems in higher dimensions
and fails to actually block senseless proposal distributions.

lib/src/Uncertainty/Bayesian/RandomWalkMetropolisHastings.cxx

@@ -120,14 +120,6 @@ void RandomWalkMetropolisHastings::setProposal(const Distribution & proposal)
   if (proposal.getDimension() != marginalIndices_.getSize())
     throw InvalidArgumentException(HERE) << "The proposal density dimension (" << proposal.getDimension()
                                          << ") does not match the block size (" << marginalIndices_.getSize() << ")";
-
-  // check the range contains the origin with enough probability
-  const Scalar cdf0 = proposal.computeCDF(Point(proposal.getDimension()));
-  const Scalar qMin = ResourceMap::GetAsScalar("Distribution-QMin");
-  const Scalar qMax = ResourceMap::GetAsScalar("Distribution-QMax");
-  if (!((cdf0 > qMin) && (cdf0 < qMax)))
-    throw InvalidArgumentException(HERE) << "The range of the proposal distribution does not contain the origin with enough probability";
-
   proposal_ = proposal;
 
   // In the following, we try do determine whether the proposal distribution is symmetric.