refactor: Small refactor

Author: fabriziodemaria

openfeature-provider-local/src/main/java/com/spotify/confidence/LocalResolverServiceFactory.java

@@ -42,7 +42,7 @@ static FlagResolverService from(
     return createFlagResolverService(accountStateProvider, accountId, stickyResolveStrategy);
   }
 
-  static FlagResolverService createFlagResolverService(
+  private static FlagResolverService createFlagResolverService(
       ApiSecret apiSecret, StickyResolveStrategy stickyResolveStrategy) {
     final var channel = createConfidenceChannel();
     final AuthServiceBlockingStub authService = AuthServiceGrpc.newBlockingStub(channel);
@@ -125,10 +125,6 @@ public void shutdown() {}
     return new WasmFlagResolverService(wasmResolverApi, stickyResolveStrategy);
   }
 
-  LocalResolverServiceFactory(StickyResolveStrategy stickyResolveStrategy) {
-    this(null, stickyResolveStrategy);
-  }
-
   LocalResolverServiceFactory(
       ResolverApi wasmResolveApi, StickyResolveStrategy stickyResolveStrategy) {
     this.wasmResolveApi = wasmResolveApi;