Fix multiple rabbitmq consumers receiving all messages

Description

Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

integration-tests/application_tests/application_test.go

@@ -94,17 +94,6 @@ func TestMain(m *testing.M) {
 	}
 	go application.Run(eventTypeCallbackTuples)
 
-	// This is needed to clear the go channel of the messages sent by RabbitMQ when creating
-	// and logging in with the admin user.
-	// Important note: only works once after starting the setup, because first time use creates
-	// a user and role and update the user because of the login. After then only logins are done, no user and role creations.
-	// This means that this will block after trying once, because of the three attempts to read from eventChannels.
-
-	<-application.addEventChannel
-	<-application.addEventChannel
-	<-application.addEventChannel
-	<-application.updateEventChannel
-
 	m.Run()
 }