YARN-5632. UPDATE_EXECUTION_TYPE causes UpdateContainerRequestPBImpl to throw. Contributed by Jason Lowe

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/api/records/ContainerUpdateType.java

@@ -37,9 +37,4 @@ public enum ContainerUpdateType {
    * Resource decrease.
    */
   DECREASE_RESOURCE,
-
-  /**
-   * Execution Type change.
-   */
-  UPDATE_EXECUTION_TYPE
 }