Set minSdkVersion to 21

app/src/main/java/com/topjohnwu/magisk/data/repository/NetworkService.kt

@@ -21,10 +21,6 @@ class NetworkService(
     private val api: GithubApiServices
 ) {
     suspend fun fetchUpdate() = safe {
-        // Pre SDK 21 no longer receives any major updates
-        if (Build.VERSION.SDK_INT < 21)
-            return fetchStableUpdate()
-
         var info = when (Config.updateChannel) {
             DEFAULT_CHANNEL, STABLE_CHANNEL -> fetchStableUpdate()
             BETA_CHANNEL -> fetchBetaUpdate()