Don't log "Jasmine worker not sending...after disconnect" messages

These haven't proven useful and they can cause serious flooding e.g
when the runner terminates execution while a worker is processing a
suite with a lot of fast specs.

lib/parallel_worker.js

@@ -121,9 +121,6 @@ class ParallelWorker {
       await env.execute();
 
       if (!this.clusterWorker_.isConnected()) {
-        console.error(
-          'Jasmine worker not sending specFileDone message after disconnect'
-        );
         return;
       }
 
@@ -153,10 +150,6 @@ function forwardingReporter(clusterWorker) {
   for (const eventName of eventNames) {
     reporter[eventName] = function (payload) {
       if (!clusterWorker.isConnected()) {
-        console.error(
-          `Jasmine worker not sending ${eventName} reporter event ` +
-          'after disconnect'
-        );
         return;
       }
 

spec/parallel_worker_spec.js

@@ -537,9 +537,6 @@ describe('ParallelWorker', function() {
       await Promise.resolve();
       // No other messages should have been sent
       expect(this.clusterWorker.send).toHaveBeenCalledOnceWith({type: 'booted'});
-      expect(console.error).toHaveBeenCalledOnceWith(
-        'Jasmine worker not sending specFileDone message after disconnect'
-      );
     });
   });
 
@@ -591,9 +588,6 @@ describe('ParallelWorker', function() {
         dispatchRepoterEvent(env, eventName, payload);
 
         expect(this.clusterWorker.send).not.toHaveBeenCalled();
-        expect(console.error).toHaveBeenCalledOnceWith(
-          `Jasmine worker not sending ${eventName} reporter event after disconnect`
-        );
       });
     }