[Signin][Android] Remove unused method of Android Edu support

This CL removes the unused method of Android Edu support.

Bug: 1044616
Change-Id: Idb87677032608785d751a5033a5335917aee62c2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2088153Reviewed-by: Boris Sazonov <bsazonov@chromium.org>
Commit-Queue: Alice Wang <aliceywang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#747264}

chrome/android/java/src/org/chromium/chrome/browser/AppHooks.java

@@ -17,7 +17,6 @@ import com.google.android.gms.common.GoogleApiAvailability;
 import org.chromium.base.Callback;
 import org.chromium.base.ContextUtils;
 import org.chromium.base.annotations.CalledByNative;
-import org.chromium.base.task.PostTask;
 import org.chromium.chrome.browser.banners.AppDetailsDelegate;
 import org.chromium.chrome.browser.customtabs.CustomTabsConnection;
 import org.chromium.chrome.browser.directactions.DirectActionCoordinator;
@@ -43,7 +42,6 @@ import org.chromium.chrome.browser.partnercustomizations.PartnerBrowserCustomiza
 import org.chromium.chrome.browser.password_manager.GooglePasswordManagerUIProvider;
 import org.chromium.chrome.browser.policy.PolicyAuditor;
 import org.chromium.chrome.browser.rlz.RevenueStats;
-import org.chromium.chrome.browser.services.AndroidEduOwnerCheckCallback;
 import org.chromium.chrome.browser.signin.GoogleActivityController;
 import org.chromium.chrome.browser.survey.SurveyController;
 import org.chromium.chrome.browser.sync.TrustedVaultClient;
@@ -59,7 +57,6 @@ import org.chromium.components.browser_ui.widget.FeatureHighlightProvider;
 import org.chromium.components.download.DownloadCollectionBridge;
 import org.chromium.components.signin.AccountManagerDelegate;
 import org.chromium.components.signin.SystemAccountManagerDelegate;
-import org.chromium.content_public.browser.UiThreadTaskTraits;
 import org.chromium.policy.AppRestrictionsProvider;
 import org.chromium.policy.CombinedPolicyProvider;
 
@@ -88,17 +85,6 @@ public abstract class AppHooks {
         return sInstance;
     }
 
-    /**
-     * Initiate AndroidEdu device check.
-     * TODO(https://crbug.com/1044616) This method needs to be removed once we will remove the
-     *  downstream overriden method
-     * @param callback Callback that should receive the results of the AndroidEdu device check.
-     */
-    public void checkIsAndroidEduDevice(final AndroidEduOwnerCheckCallback callback) {
-        PostTask.postTask(UiThreadTaskTraits.DEFAULT, () -> callback.onSchoolCheckDone(false));
-        assert false : "This method should not be called!";
-    }
-
     /**
      * Creates a new {@link AccountManagerDelegate}.
      * @return the created {@link AccountManagerDelegate}.