Fix sdk according review in #14617 (#14831)

Author: Enjection

ydb/public/lib/ydb_cli/commands/ydb_dynamic_config.cpp

@@ -215,7 +215,7 @@ int TCommandConfigReplace::Run(TConfig& config) {
 
     auto status = client.ReplaceConfig(DynamicConfig, settings).GetValueSync();
 
-    if (status.IsUnimplementedError()) {
+    if (status.GetStatus() == EStatus::CLIENT_CALL_UNIMPLEMENTED) {
         Cerr << "Warning: Fallback to DynamicConfig API" << Endl;
 
         auto client = NYdb::NDynamicConfig::TDynamicConfigClient(*driver);

ydb/public/sdk/cpp/client/ydb_config/ya.make

@@ -56,10 +56,6 @@ void TStatus::CheckStatusOk(const TStringType& str) const {
     Impl_->CheckStatusOk(str);
 }
 
-bool TStatus::IsUnimplementedError() const {
-    return Impl_->Status.Status == EStatus::CLIENT_CALL_UNIMPLEMENTED;
-}
-
 void TStatus::RaiseError(const TStringType& str) const {
     Impl_->RaiseError(str);
 }

ydb/public/sdk/cpp/client/ydb_config/ydb_config.cpp

@@ -26,7 +26,6 @@ class TStatus {
     const NYql::TIssues& GetIssues() const;
     bool IsSuccess() const;
     bool IsTransportError() const;
-    bool IsUnimplementedError() const;
     const TStringType& GetEndpoint() const;
     const std::multimap<TStringType, TStringType>& GetResponseMetadata() const;
     float GetConsumedRu() const;