Remove superfluous listener remove

day.js

@@ -4,7 +4,6 @@ import {
   Text
 } from 'react-native'
 import cycleDayModule from './get-cycle-day-number'
-import { bleedingDaysSortedByDate } from './db'
 import DayView from './day-view'
 import BleedingEditView from './bleeding'
 import TemperatureEditView from './temperature'
@@ -28,10 +27,6 @@ export default class Day extends Component {
     }
   }
 
-  componentWillUnmount() {
-    bleedingDaysSortedByDate.removeAllListeners()
-  }
-
   render() {
     return (
       <View style={styles.container}>