Comment out the function causing CPU burn up.

pkg/analysis_server/lib/src/services/completion/dart_completion_manager.dart

Index: pkg/analysis_server/lib/src/services/completion/dart_completion_manager.dart
diff --git a/pkg/analysis_server/lib/src/services/completion/dart_completion_manager.dart b/pkg/analysis_server/lib/src/services/completion/dart_completion_manager.dart
index c40763ca1ecb968f357952b5c27d0a25b3fd137f..6bec43e4c88be12d6573cb93b645bbc733eaa1ae 100644
--- a/pkg/analysis_server/lib/src/services/completion/dart_completion_manager.dart
+++ b/pkg/analysis_server/lib/src/services/completion/dart_completion_manager.dart
@@ -75,14 +75,14 @@ class DartCompletionManager extends CompletionManager {
         new DartCompletionCache(context, source));
   }
 
-  @override
-  void computeCache() {
-    waitForAnalysis().then((CompilationUnit unit) {
-      if (unit != null && !cache.isImportInfoCached(unit)) {
-        cache.computeImportInfo(unit, searchEngine);
-      }
-    });
-  }
+//  @override
+//  void computeCache() {
+//    waitForAnalysis().then((CompilationUnit unit) {
+//      if (unit != null && !cache.isImportInfoCached(unit)) {
+//        cache.computeImportInfo(unit, searchEngine);
+//      }
+//    });
+//  }
 
   /**
    * Compute suggestions based upon cached information only