remove print commited by mistake

and add one assertion

dream/plugins/ACO.py

@@ -52,6 +52,7 @@ class ACO(plugin.ExecutionPlugin):
     assert collated
 
     max_results = data['general']['numberOfSolutions']
+    assert max_results >= 1
 
     ants = [] #list of ants for keeping track of their performance
 
@@ -141,6 +142,5 @@ class ACO(plugin.ExecutionPlugin):
       result['key'] = ant['key']
       result_list.append(result)
 
-    print data['result']['result_list']
     self.logger.info("ACO finished, execution time %0.2fs" % (time.time() - start))
     return data

dream/simulation/LineGenerationJSON.py

@@ -683,7 +683,6 @@ def main(argv=[], input_data=None):
       # XXX I am not sure we still need this case
       return
 
-    print G.JSONData
     # XXX result_list is not needed here, we could replace result by result_list
     G.JSONData['result'] = {'result_list': [G.outputJSON]}
     #logger.info("execution time="+str(time.time()-start))