Revert "Corrections to getRegisteredApplications and CLI implementation"

ApplicationService is not available. For example, when using the ONOS CLI:

onos> apps -s -a
Service org.onosproject.app.ApplicationService not found

The issue seems to be a circular dependency, as ApplicationManager depends on CoreService, but CoreManager depends on ApplicationService.

Reverting for now.

This reverts commit 35ef3d3000f8b19608531dfd06f8e78482c45b32.

Change-Id: I298c3c7844df7f2395e092fbb89a8e9264883094
diff --git a/cli/src/main/java/org/onosproject/cli/app/ApplicationsListCommand.java b/cli/src/main/java/org/onosproject/cli/app/ApplicationsListCommand.java
index 806449e..24b2da1 100644
--- a/cli/src/main/java/org/onosproject/cli/app/ApplicationsListCommand.java
+++ b/cli/src/main/java/org/onosproject/cli/app/ApplicationsListCommand.java
@@ -62,23 +62,16 @@
     private boolean sortByName = false;
 
 
-    @Option(name = "-r", aliases = "--regapps", description = "Get Registered Apps for Runtime Version")
-    private boolean getRegisteredApps = false;
-
     @Override
     protected void doExecute() {
         ApplicationService service = get(ApplicationService.class);
-        List<Application> apps;
-        if (getRegisteredApps) {
-            apps = newArrayList(service.getRegisteredApplications());
-        } else {
-            apps = newArrayList(service.getApplications());
-        }
+        List<Application> apps = newArrayList(service.getApplications());
         if (sortByName) {
             apps.sort(Comparator.comparing(app -> app.id().name()));
         } else {
             Collections.sort(apps, Comparators.APP_COMPARATOR);
         }
+
         if (outputJson()) {
             print("%s", json(service, apps));
         } else {