remove unused delegate, update comments

Signed-off-by: christian.lutnik <christian.lutnik@dynatrace.com>

src/main/java/dev/openfeature/sdk/FeatureProviderStateManager.java

@@ -2,21 +2,10 @@
 
 import dev.openfeature.sdk.exceptions.OpenFeatureError;
 import lombok.Getter;
-import lombok.experimental.Delegate;
 
 import java.util.concurrent.atomic.AtomicBoolean;
 
 class FeatureProviderStateManager implements EventProviderListener {
-
-    private interface ExcludeFromDelegate {
-        void initialize(EvaluationContext evaluationContext) throws Exception;
-
-        void shutdown();
-
-        ProviderState getState();
-    }
-
-    @Delegate(excludes = ExcludeFromDelegate.class)
     private final FeatureProvider delegate;
     private final AtomicBoolean isInitialized = new AtomicBoolean();
     @Getter

src/main/java/dev/openfeature/sdk/OpenFeatureClient.java

@@ -121,7 +121,7 @@ private <T> FlagEvaluationDetails<T> evaluateFlag(FlagValueType type, String key
         FeatureProvider provider;
 
         try {
-            // openfeatureApi.getProvider() must be called once to maintain a consistent reference
+            // providerAccessor.getProviderStateManager() must be called once to maintain a consistent reference
             FeatureProviderStateManager stateManager = providerAccessor.getProviderStateManager();
             provider = stateManager.getProvider();
             ProviderState state = stateManager.getState();