Remove iwla parameter in hook functions

plugins/display/all_visits.py

@@ -9,8 +9,8 @@ class IWLADisplayAllVisits(IPlugin):
         super(IWLADisplayAllVisits, self).__init__(iwla)
         self.API_VERSION = 1
 
-    def hook(self, iwla):
-        hits = iwla.getValidVisitors()
+    def hook(self):
+        hits = self.iwla.getValidVisitors()
         last_access = sorted(hits.values(), key=lambda t: t['last_access'], reverse=True)
 
         cur_time = self.iwla.getCurTime()
@@ -40,7 +40,7 @@ class IWLADisplayAllVisits(IPlugin):
         display = self.iwla.getDisplay()
         display.addPage(page)
 
-        index = iwla.getDisplayIndex()
+        index = self.iwla.getDisplayIndex()
         block = DisplayHTMLRawBlock()
         block.setRawHTML('<a href=\'%s\'>All visits</a>' % (filename))
         index.appendBlock(block)