Remove some unused rx/coroutine bridge code

app/src/main/java/eu/kanade/tachiyomi/util/lang/RxCoroutineBridge.kt

@@ -48,47 +48,6 @@ suspend fun <T> Single<T>.await(subscribeOn: Scheduler? = null): T {
     }
 }
 
-// suspend fun Completable.awaitSuspending(subscribeOn: Scheduler? = null) {
-//     return suspendCancellableCoroutine { continuation ->
-//         val self = if (subscribeOn != null) subscribeOn(subscribeOn) else this
-//         lateinit var sub: Subscription
-//         sub = self.subscribe(
-//             {
-//                 continuation.resume(Unit) {
-//                     sub.unsubscribe()
-//                 }
-//             },
-//             {
-//                 if (!continuation.isCancelled) {
-//                     continuation.resumeWithException(it)
-//                 }
-//             }
-//         )
-//
-//         continuation.invokeOnCancellation {
-//             sub.unsubscribe()
-//         }
-//     }
-// }
-//
-// suspend fun Completable.awaitCompleted(): Unit = suspendCancellableCoroutine { cont ->
-//     subscribe(
-//         object : CompletableSubscriber {
-//             override fun onSubscribe(s: Subscription) {
-//                 cont.unsubscribeOnCancellation(s)
-//             }
-//
-//             override fun onCompleted() {
-//                 cont.resume(Unit)
-//             }
-//
-//             override fun onError(e: Throwable) {
-//                 cont.resumeWithException(e)
-//             }
-//         }
-//     )
-// }
-
 suspend fun <T> Single<T>.await(): T = suspendCancellableCoroutine { cont ->
     cont.unsubscribeOnCancellation(
         subscribe(
@@ -105,28 +64,8 @@ suspend fun <T> Single<T>.await(): T = suspendCancellableCoroutine { cont ->
     )
 }
 
-// suspend fun <T> Observable<T>.awaitFirst(): T = first().awaitOne()
-//
-// suspend fun <T> Observable<T>.awaitFirstOrDefault(default: T): T =
-//     firstOrDefault(default).awaitOne()
-//
-// suspend fun <T> Observable<T>.awaitFirstOrNull(): T? = firstOrDefault(null).awaitOne()
-//
-// suspend fun <T> Observable<T>.awaitFirstOrElse(defaultValue: () -> T): T = switchIfEmpty(
-//     Observable.fromCallable(
-//         defaultValue
-//     )
-// ).first().awaitOne()
-//
-// suspend fun <T> Observable<T>.awaitLast(): T = last().awaitOne()
-
 suspend fun <T> Observable<T>.awaitSingle(): T = single().awaitOne()
 
-// suspend fun <T> Observable<T>.awaitSingleOrDefault(default: T): T =
-//     singleOrDefault(default).awaitOne()
-//
-// suspend fun <T> Observable<T>.awaitSingleOrNull(): T? = singleOrDefault(null).awaitOne()
-
 private suspend fun <T> Observable<T>.awaitOne(): T = suspendCancellableCoroutine { cont ->
     cont.unsubscribeOnCancellation(
         subscribe(
@@ -184,32 +123,6 @@ fun <T : Any> Observable<T>.asFlow(): Flow<T> = callbackFlow {
     awaitClose { subscription.unsubscribe() }
 }
 
-// fun <T : Any> Flow<T>.asObservable(backpressureMode: Emitter.BackpressureMode = Emitter.BackpressureMode.NONE): Observable<T> {
-//     return Observable.create(
-//         { emitter ->
-//             /*
-//              * ATOMIC is used here to provide stable behaviour of subscribe+dispose pair even if
-//              * asObservable is already invoked from unconfined
-//              */
-//             val job = GlobalScope.launch(Dispatchers.Unconfined, start = CoroutineStart.ATOMIC) {
-//                 try {
-//                     collect { emitter.onNext(it) }
-//                     emitter.onCompleted()
-//                 } catch (e: Throwable) {
-//                     // Ignore `CancellationException` as error, since it indicates "normal cancellation"
-//                     if (e !is CancellationException) {
-//                         emitter.onError(e)
-//                     } else {
-//                         emitter.onCompleted()
-//                     }
-//                 }
-//             }
-//             emitter.setCancellation { job.cancel() }
-//         },
-//         backpressureMode
-//     )
-// }
-
 fun <T> runAsObservable(
     block: suspend () -> T,
     backpressureMode: Emitter.BackpressureMode = Emitter.BackpressureMode.NONE