Revert "nf-wave WaveClient: fix for s5cmdConfigUrl"

This reverts commit cb04607.

plugins/nf-wave/src/main/io/seqera/wave/plugin/WaveClient.groovy

@@ -125,7 +125,7 @@ class WaveClient {
         this.fusion = new FusionConfig(session.config.fusion as Map ?: Collections.emptyMap(), SysEnv.get())
         this.tower = new TowerConfig(session.config.tower as Map ?: Collections.emptyMap(), SysEnv.get())
         this.awsFargate = WaveFactory.isAwsBatchFargateMode(session.config)
-        this.s5cmdConfigUrl = parseUrl(session.config.navigate('wave.s5cmdConfigUrl') as String)
+        this.s5cmdConfigUrl = session.config.navigate('wave.s5cmdConfigUrl') as URL
         this.endpoint = config.endpoint()
         this.condaChannels = session.getCondaConfig()?.getChannels() ?: DEFAULT_CONDA_CHANNELS
         log.debug "Wave config: $config"
@@ -142,10 +142,6 @@ class WaveClient {
         this.httpClient = newHttpClient()
     }
 
-    private URL parseUrl(String value) {
-        return value ? new URL(value) : null
-    }
-
     protected HttpClient newHttpClient() {
         final builder = HttpClient.newBuilder()
                 .version(HttpClient.Version.HTTP_1_1)