Removed deprecated, hidden method.

Test: existing CtsAutoFillServiceTestCases pass
Bug: 37563972

Change-Id: I10c5a2b16b422694d72b3ccaf6629d50247c7f49
diff --git a/core/java/android/service/autofill/AutofillService.java b/core/java/android/service/autofill/AutofillService.java
index a90ee93..07c3503 100644
--- a/core/java/android/service/autofill/AutofillService.java
+++ b/core/java/android/service/autofill/AutofillService.java
@@ -23,7 +23,6 @@
 import android.annotation.SdkConstant;
 import android.app.Activity;
 import android.app.Service;
-import android.app.assist.AssistStructure;
 import android.content.Intent;
 import android.os.CancellationSignal;
 import android.os.IBinder;
@@ -208,12 +207,6 @@
     public void onDisconnected() {
     }
 
-    /** @hide */
-    @Deprecated
-    public final void disableSelf() {
-        getSystemService(AutofillManager.class).disableOwnedAutofillServices();
-    }
-
     /**
      * Returns the {@link FillEventHistory.Event events} since the last {@link FillResponse} was
      * returned.