Remove OpenAiRequest as it was uneeded

Author: Max Hniebergall

x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/external/request/elastic/ElasticInferenceServiceUnifiedChatCompletionRequest.java

@@ -16,7 +16,6 @@
 import org.elasticsearch.xpack.inference.external.http.sender.UnifiedChatInput;
 import org.elasticsearch.xpack.inference.external.request.HttpRequest;
 import org.elasticsearch.xpack.inference.external.request.Request;
-import org.elasticsearch.xpack.inference.external.request.openai.OpenAiRequest;
 import org.elasticsearch.xpack.inference.services.elastic.completion.ElasticInferenceServiceCompletionModel;
 import org.elasticsearch.xpack.inference.telemetry.TraceContext;
 import org.elasticsearch.xpack.inference.telemetry.TraceContextAware;
@@ -25,11 +24,7 @@
 import java.nio.charset.StandardCharsets;
 import java.util.Objects;
 
-public class ElasticInferenceServiceUnifiedChatCompletionRequest implements OpenAiRequest, TraceContextAware {
-
-    // Implementing OpenAiRequest to ensure compatibility with the OpenAI API interface
-    // This allows the ElasticInferenceService to handle requests in a standardized manner
-    // and leverage existing infrastructure for processing OpenAI-like requests.
+public class ElasticInferenceServiceUnifiedChatCompletionRequest implements TraceContextAware, Request {
 
     private final ElasticInferenceServiceCompletionModel model;
     private final UnifiedChatInput unifiedChatInput;

x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/external/request/openai/OpenAiEmbeddingsRequest.java

@@ -27,7 +27,7 @@
 import static org.elasticsearch.xpack.inference.external.request.RequestUtils.createAuthBearerHeader;
 import static org.elasticsearch.xpack.inference.external.request.openai.OpenAiUtils.createOrgHeader;
 
-public class OpenAiEmbeddingsRequest implements OpenAiRequest {
+public class OpenAiEmbeddingsRequest implements Request {
 
     private final Truncator truncator;
     private final OpenAiAccount account;

x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/external/request/openai/OpenAiUnifiedChatCompletionRequest.java

@@ -27,7 +27,7 @@
 import static org.elasticsearch.xpack.inference.external.request.RequestUtils.createAuthBearerHeader;
 import static org.elasticsearch.xpack.inference.external.request.openai.OpenAiUtils.createOrgHeader;
 
-public class OpenAiUnifiedChatCompletionRequest implements OpenAiRequest {
+public class OpenAiUnifiedChatCompletionRequest implements Request {
 
     private final OpenAiAccount account;
     private final OpenAiChatCompletionModel model;