Merged UI/controller classes to improve maintainability

Author: georgweiss

app/save-and-restore/app/src/main/java/org/phoebus/applications/saveandrestore/ui/snapshot/SnapshotController.java

@@ -75,10 +75,6 @@ public SnapshotTab(org.phoebus.applications.saveandrestore.model.Node node, Save
                 if (clazz.isAssignableFrom(SnapshotController.class)) {
                     return clazz.getConstructor(SnapshotTab.class)
                             .newInstance(this);
-                } else if (clazz.isAssignableFrom(SnapshotTableViewController.class)) {
-                    return clazz.getConstructor().newInstance();
-                } else if (clazz.isAssignableFrom(SnapshotControlsViewController.class)) {
-                    return clazz.getConstructor().newInstance();
                 }
             } catch (Exception e) {
                 ExceptionDetailsErrorDialog.openError("Error",