pull dep mgirations from credential

credential pulls mdm, so we don't combine these

lib/tasks/databases.rake

@@ -2,7 +2,7 @@ namespace :db do
   # Add onto the task so that after adding Rails.application.paths['db/migrate']
   task :load_config do
     # It's important to call to_a or the paths will just be relative and not realpaths
-    gem_migrations =  MetasploitDataModels::Engine.instance.paths['db/migrate'].to_a + Metasploit::Credential::Engine.instance.paths['db/migrate'].to_a
+    gem_migrations = Metasploit::Credential::Engine.instance.paths['db/migrate'].to_a
     #ActiveRecord::Migrator.migrations_paths += gem_migrations
     ActiveRecord::Tasks::DatabaseTasks.migrations_paths += gem_migrations
   end