Set pm.BackgroundDexOptService as the source of true

The real dexopt maintainance job is
com.android.server.pm.BackgroundDexOptService, and not
com.android.server.BackgroundDexOptJobService

Partial revert of commit 096d304ae3d85c1bfcda1a1d9cd4eb13d0815500.

Test: manual inspection
Bug: 36140426
Change-Id: I983ac91117f107282095fa7eefdbce08e0dcfce3
diff --git a/services/java/com/android/server/SystemServer.java b/services/java/com/android/server/SystemServer.java
index a8423e2..f84bfef 100644
--- a/services/java/com/android/server/SystemServer.java
+++ b/services/java/com/android/server/SystemServer.java
@@ -86,6 +86,7 @@
 import com.android.server.om.OverlayManagerService;
 import com.android.server.os.DeviceIdentifiersPolicyService;
 import com.android.server.os.SchedulingPolicyService;
+import com.android.server.pm.BackgroundDexOptService;
 import com.android.server.pm.Installer;
 import com.android.server.pm.LauncherAppsService;
 import com.android.server.pm.OtaDexoptService;
@@ -1428,11 +1429,11 @@
                     traceEnd();
                 }
 
-                traceBeginAndSlog("StartBackgroundDexOptJobService");
+                traceBeginAndSlog("StartBackgroundDexOptService");
                 try {
-                    BackgroundDexOptJobService.schedule(context);
+                    BackgroundDexOptService.schedule(context);
                 } catch (Throwable e) {
-                    reportWtf("starting StartBackgroundDexOptJobService", e);
+                    reportWtf("starting StartBackgroundDexOptService", e);
                 }
                 traceEnd();