remove debugging logs

Signed-off-by: Xun Zhang <xunzh@amazon.com>

Author: Zhangxunmt

ml-algorithms/src/main/java/org/opensearch/ml/engine/ingest/AbstractIngestion.java

@@ -161,9 +161,7 @@ protected void batchIngest(
             Map<String, Object> filteredMapping = isSoleSource
                 ? mlBatchIngestionInput.getFieldMapping()
                 : filterFieldMapping(mlBatchIngestionInput, sourceIndex);
-            System.out.println("filteredMapping is " + filteredMapping);
             Map<String, Object> jsonMap = processFieldMapping(jsonStr, filteredMapping);
-            System.out.println("processFieldMapping is " + jsonMap);
             if (jsonMap.isEmpty()) {
                 return;
             }

plugin/src/test/java/org/opensearch/ml/rest/RestMLInferenceSearchResponseProcessorIT.java

@@ -244,7 +244,6 @@ public void testMLInferenceProcessorRemoteModelCustomPrompt() throws Exception {
         createSearchPipelineProcessor(createPipelineRequestBody, pipelineName);
 
         Map response = searchWithPipeline(client(), index_name, pipelineName, query);
-        System.out.println(response);
         Assert.assertNotNull(JsonPath.parse(response).read("$.hits.hits[0]._source.llm_response"));
         Assert.assertNotNull(JsonPath.parse(response).read("$.hits.hits[1]._source.llm_response"));
     }