Revert "Patched bpol descriptor with cheminf ID" (fixes #3541366)

This reverts commit a4db4a2.

The introduction will have to be repeated later, when the ontology bits are updated too, so that
tools can look up info on those descriptors.

src/main/org/openscience/cdk/qsar/descriptors/molecular/BPolDescriptor.java

@@ -99,7 +99,7 @@ public BPolDescriptor() {
     @TestMethod("testGetSpecification")
     public DescriptorSpecification getSpecification() {
         return new DescriptorSpecification(
-            "http://semanticscience.org/resource/CHEMINF_001100",
+            "http://www.blueobelisk.org/ontologies/chemoinformatics-algorithms/#bpol",
             this.getClass().getName(),
             "$Id$",
             "The Chemistry Development Kit");