Removed dead code

Author: litetex

app/src/main/java/org/schabi/newpipe/CheckForNewAppVersion.java

@@ -7,15 +7,13 @@
 import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
 import android.content.pm.Signature;
-import android.net.ConnectivityManager;
 import android.net.Uri;
 import android.util.Log;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.core.app.NotificationCompat;
 import androidx.core.app.NotificationManagerCompat;
-import androidx.core.content.ContextCompat;
 import androidx.core.content.pm.PackageInfoCompat;
 import androidx.preference.PreferenceManager;
 
@@ -158,13 +156,6 @@ private static void compareAppVersionAndShowNotification(@NonNull final Applicat
         }
     }
 
-    private static boolean isConnected(@NonNull final App app) {
-        final ConnectivityManager connectivityManager =
-                ContextCompat.getSystemService(app, ConnectivityManager.class);
-        return connectivityManager != null && connectivityManager.getActiveNetworkInfo() != null
-                && connectivityManager.getActiveNetworkInfo().isConnected();
-    }
-
     public static boolean isGithubApk(@NonNull final App app) {
         return getCertificateSHA1Fingerprint(app).equals(GITHUB_APK_SHA1);
     }