remove useless code

Signed-off-by: xinyual <xinyual@amazon.com>

Author: xinyual

ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/AgentTool.java

@@ -146,8 +146,6 @@ private void extractFromChatParameters(Map<String, String> parameters) {
                 parameters.putAll(chatParameters);
             } catch (Exception exception) {
                 log.info("fail extract parameters from key 'input' due to" + exception.getMessage());
-            } finally {
-                return;
             }
         }
     }