Remove the unused loadingEnabled param from BuildView.update.

--
MOS_MIGRATED_REVID=118560010
diff --git a/src/main/java/com/google/devtools/build/lib/analysis/BuildView.java b/src/main/java/com/google/devtools/build/lib/analysis/BuildView.java
index 27bef3d..12a2445 100644
--- a/src/main/java/com/google/devtools/build/lib/analysis/BuildView.java
+++ b/src/main/java/com/google/devtools/build/lib/analysis/BuildView.java
@@ -419,8 +419,7 @@
       Options viewOptions,
       TopLevelArtifactContext topLevelOptions,
       EventHandler eventHandler,
-      EventBus eventBus,
-      boolean loadingEnabled)
+      EventBus eventBus)
       throws ViewCreationFailedException, InterruptedException {
     LOG.info("Starting analysis");
     pollInterruptedStatus();