Revert "Alternate open source licenses plugin"

This reverts commit 22f26f8288.

app/src/main/java/eu/kanade/tachiyomi/ui/more/AboutController.kt

@@ -5,10 +5,9 @@ import android.content.Intent
 import android.net.Uri
 import android.os.Build
 import android.os.Bundle
-import android.webkit.WebView
 import androidx.preference.PreferenceScreen
 import com.afollestad.materialdialogs.MaterialDialog
-import com.afollestad.materialdialogs.customview.customView
+import com.google.android.gms.oss.licenses.OssLicensesMenuActivity
 import eu.kanade.tachiyomi.BuildConfig
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.updater.UpdateChecker
@@ -126,7 +125,7 @@ class AboutController : SettingsController() {
                 titleRes = R.string.licenses
 
                 onClick {
-                    LicensesDialogController().showDialog(router)
+                    startActivity(Intent(activity, OssLicensesMenuActivity::class.java))
                 }
             }
         }
@@ -161,19 +160,6 @@ class AboutController : SettingsController() {
         }
     }
 
-    class LicensesDialogController(bundle: Bundle? = null) : DialogController(bundle) {
-
-        override fun onCreateDialog(savedViewState: Bundle?): Dialog {
-            val webView = WebView(activity!!)
-            webView.loadUrl("file:///android_asset/open_source_licenses.html")
-
-            return MaterialDialog(activity!!)
-                .title(res = R.string.licenses)
-                .customView(view = webView)
-                .positiveButton(res = android.R.string.ok)
-        }
-    }
-
     class NewUpdateDialogController(bundle: Bundle? = null) : DialogController(bundle) {
 
         constructor(body: String, url: String) : this(