don't swallow Exception when reading jarFile

assuming this code is leftover from initial hacking but can't see why we
would want to ignore an inability to read a jarfile.

core/src/main/java/com/spotify/missinglink/ArtifactLoader.java

@@ -63,12 +63,8 @@ private Artifact loadFromJar(ArtifactName artifactName, File path) {
       while (entries.hasMoreElements()) {
         JarEntry entry = entries.nextElement();
         if (entry.getName().endsWith(".class")) {
-          try {
-            DeclaredClass cl = new ClassLoader(jarFile.getInputStream(entry)).load();
-            classes.put(cl.className(), cl);
-          } catch (Exception e) {
-            System.err.println("Could not load " + entry.getName() + " from " + path);
-          }
+          DeclaredClass cl = new ClassLoader(jarFile.getInputStream(entry)).load();
+          classes.put(cl.className(), cl);
         }
       }
       return artifact(artifactName, classes);