remove verifications

Signed-off-by: Matheus Agio Nerone <man13@inf.ufpr.br>

app/models/learning_object.rb

@@ -11,10 +11,7 @@ class LearningObject
                 # Relation attrs
                 :likes, :views, :downloads, :subjects, :attributes, :publisher
 
-  validates_presence_of :name, :created_at, :type, :likes, :views, :downloads
-  validates_numericality_of :likes, greater_than_or_equal_to: 0
-  validates_numericality_of :views, greater_than_or_equal_to: 0
-  validates_numericality_of :downloads, greater_than_or_equal_to: 0
+  validates_presence_of :name
 
   def initialize(params={})
     super(params.merge(defaults))