get a faster response from a change

in the previous implementation, the row-waiting-for-answer
class was removed only on the next poll. this should happen
more quickly.

+ remove some print statements

influxgraph.py

@@ -274,7 +274,7 @@ class InfluxGraph(HandlerBase):
                             pass  # skip not existing or already removed items
                 # add remaining curves
                 curves.extend(curve_dict.values())
-                print(key, curves)
+                # print(key, curves)
                 group['curves'] = curves
                 result.append(group)
         return result
@@ -370,8 +370,8 @@ class InfluxGraph(HandlerBase):
             if len(curve) > l:
                 del curve[:l]
             else:
-                if fullminute:
-                    print('R', key)
+                # if fullminute:
+                #     print('R', key)
                 result.pop(key)
         # print('poll', sum(len(c) for c in result.values()), self.last_time)
         if len(result) > 0: