fix: remove duplicate error type attribute

Author: diegomarquezp

sdk-platform-java/gax-java/gax/src/main/java/com/google/api/gax/tracing/ObservabilityAttributes.java

@@ -85,12 +85,6 @@ public class ObservabilityAttributes {
   /** The url template of the request (e.g. /v1/{name}:access). */
   public static final String URL_TEMPLATE_ATTRIBUTE = "url.template";
 
-  /**
-   * The specific error type. Value will be google.rpc.ErrorInfo.reason, a specific Server Error
-   * Code, Client-Side Network/Operational Error (e.g., CLIENT_TIMEOUT) or internal fallback.
-   */
-  public static final String ERROR_TYPE_ATTRIBUTE = "error.type";
-
   /** A human-readable error message, which may include details from the exception or response. */
   public static final String STATUS_MESSAGE_ATTRIBUTE = "status.message";
 
@@ -112,7 +106,9 @@ public class ObservabilityAttributes {
   /** The full URL of the HTTP request, with sensitive query parameters redacted. */
   public static final String HTTP_URL_FULL_ATTRIBUTE = "url.full";
 
-  /** The type of error that occurred (e.g., from google.rpc.ErrorInfo.reason). */
+  /** * The specific error type. Value will be google.rpc.ErrorInfo.reason, a specific Server Error
+   * Code, Client-Side Network/Operational Error (e.g., CLIENT_TIMEOUT) or internal fallback.
+   */
   public static final String ERROR_TYPE_ATTRIBUTE = "error.type";
 
   /** The domain of the error (e.g., from google.rpc.ErrorInfo.domain). */