Delete graphics package (48 files, 13K lines) — stub ImageGenerator

Removed entire graphics/direct/ rendering engine (48 files, ~12,000 lines).
ImageGenerator replaced with no-op stubs maintaining the same API.
Image generation was optional (gated by GENERATE_IMAGE flags) and not
needed for core atom-atom mapping functionality.

Also fixed ReactionFingerprinter and InChiMoleculeLabeller to not
reference graphics classes.

345 → 229 Java files (34% reduction). All 135 tests pass.
Test suite: 76s (was 466s originally — 6x faster).

Co-Authored-By: Syed Asad Rahman <asad.rahman@bioinceptionlabs.com>

Author: asad

src/main/java/com/bioinceptionlabs/reactionblast/fingerprints/ReactionFingerprinter.java

@@ -35,7 +35,6 @@
 import static org.openscience.smsd.tools.ExtAtomContainerManipulator.removeHydrogensExceptSingleAndPreserveAtomID;
 import static com.bioinceptionlabs.reactionblast.fingerprints.FingerprintGenerator.getFingerprinterSize;
 import com.bioinceptionlabs.reactionblast.fingerprints.interfaces.IPatternFingerprinter;
-import com.bioinceptionlabs.reactionblast.graphics.direct.DirectReactionDrawer;
 
 /**
  * @contact Syed Asad Rahman, BioInception.
@@ -45,7 +44,7 @@ public class ReactionFingerprinter implements Serializable {
 
     private static final long serialVersionUID = 7867867834118778L;
     private final static ILoggingTool LOGGER
-            = createLoggingTool(DirectReactionDrawer.class);
+            = createLoggingTool(ReactionFingerprinter.class);
 
     /**
      *