Remove Morgan number overhead from MCS thread

Morgan invariant computation in MCSThread added ~12s overhead per
test suite run without measurable benefit — SMSD's VF2/MCSPlus
algorithms don't use the MorganNumber atom property internally.

Morgan-based MCS pruning should be implemented in the SMSD library
(AtomMatcher) where it can directly constrain the compatibility graph.
Removed from RDT to keep mapping fast.

Author: asad

src/main/java/com/bioinceptionlabs/reactionblast/mapping/graph/MCSThread.java

@@ -309,10 +309,6 @@ public MCSSolution call() throws Exception {
 
     private IAtomContainer getNewContainerWithIDs(IAtomContainer mol)
             throws CDKException, CloneNotSupportedException {
-        /*
-         Generating SMILES speed ups the mapping process by n-FOLDS
-         May be this is CDK inherent bug, which relies on the properties set by the SMILES
-         */
         if (mol != null && mol.getAtomCount() > 0) {
             IAtomContainer ac;
             ac = ExtAtomContainerManipulator.cloneWithIDs(mol);