fix: remove duplicated line

Author: metacosm

Diff for: operator-framework-core/src/main/java/io/javaoperatorsdk/operator/processing/dependent/kubernetes/KubernetesDependentResource.java

@@ -134,7 +134,6 @@ public R update(R actual, R desired, P primary, Context<P> context) {
     sanitizeDesired(desired, actual, primary, context);
     if (useSSA(context)) {
       updatedResource = prepare(desired, primary, "Updating")
-          .fieldManager(context.getControllerConfiguration().fieldManager())
           .fieldManager(context.getControllerConfiguration().fieldManager())
           .forceConflicts().serverSideApply();
     } else {