Add small sources, fix , rename sources , remove code not used, remove dead sources, typo.

src/main/kotlin/org/koitharu/kotatsu/parsers/site/otakusanctuary/OtakuSanctuaryParser.kt

@@ -311,11 +311,11 @@ internal abstract class OtakuSanctuaryParser(
 			}
 
 			"[IS1]" -> {
-				val url = url.replace("[IS1]", "https://imagepi.otakuscan.net/")
+				val url1 = url.replace("[IS1]", "https://imagepi.otakuscan.net/")
-				if (url.contains("vi") && url.contains("otakusan.net_")) {
+				if (url1.contains("vi") && url1.contains("otakusan.net_")) {
-					url
+					url1
 				} else {
-					url.toHttpUrl().newBuilder().apply {
+					url1.toHttpUrl().newBuilder().apply {
 						addQueryParameter("vi", vi)
 					}.build().toString()
 				}

src/main/kotlin/org/koitharu/kotatsu/parsers/site/vi/HentaiVNParser.kt

@@ -4,7 +4,6 @@ import kotlinx.coroutines.async
 import kotlinx.coroutines.coroutineScope
 import okhttp3.Headers
 import org.jsoup.nodes.Document
-import org.jsoup.nodes.Element
 import org.koitharu.kotatsu.parsers.MangaLoaderContext
 import org.koitharu.kotatsu.parsers.MangaParser
 import org.koitharu.kotatsu.parsers.MangaSourceParser