Remove duplicate build tasks in bamboo specs

bamboo-specs/src/main/java/buildjob/PlanSpec.java

@@ -72,14 +72,6 @@ public class PlanSpec {
                         .jobs(new Job("Default Job",
                                 new BambooKey("JOB1"))
                                 .tasks(
-                                        new ScriptTask()
-                                                .description("Clean")
-                                                .inlineBody("#!/bin/bash\n" +
-                                                        "set -e\n" +
-                                                        "rm -rf ./*"),
-                                        new VcsCheckoutTask()
-                                                .description("Checkout Default Repository")
-                                                .checkoutItems(new CheckoutItem().defaultRepository()),
                                         new ScriptTask()
                                                 .description("Clean")
                                                 .inlineBody("#!/bin/bash\n" +