Revert "Add onStop parameter to this.props.start()"

This reverts commit fc9c24a.

Author: ohtangza

README.md

@@ -176,9 +176,7 @@ class HomeScreen {
 ```
 
 ### Triggering the tutorial
-Use `this.props.start(fromStep, onStop)` in the root component in order to trigger the tutorial. You can either invoke it with a touch event or in `componentDidMount`. Note that the component and all its descendants must be mounted before starting the tutorial since the `CopilotStep`s need to be registered first.
-
-The `onStop` method will be called after a user selects 'Skip' or 'Finish' buttion in the tooltip.
+Use `this.props.start()` in the root component in order to trigger the tutorial. You can either invoke it with a touch event or in `componentDidMount`. Note that the component and all its descendants must be mounted before starting the tutorial since the `CopilotStep`s need to be registered first.
 
 ### Listening to the events
 Along with `this.props.start()`, `copilot` HOC passes `copilotEvents` function to the component to help you with tracking of tutorial progress. It utilizes [mitt](https://github.com/developit/mitt) under the hood, you can see how full API there.

src/hocs/copilot.js

@@ -87,7 +87,6 @@ const copilot = ({
       });
 
       startTries = 0;
-      onStop = null;
 
       mounted = false;
 
@@ -125,7 +124,7 @@ const copilot = ({
         await this.setCurrentStep(this.getPrevStep());
       }
 
-      start = async (fromStep?: string, onStop?: () => void): void => {
+      start = async (fromStep?: string): void => {
         const { steps } = this.state;
 
         const currentStep = fromStep
@@ -147,17 +146,11 @@ const copilot = ({
           await this.setVisibility(true);
           this.startTries = 0;
         }
-
-        this.onStop = onStop;
       }
 
       stop = async (): void => {
         await this.setVisibility(false);
         this.eventEmitter.emit('stop');
-
-        if (this.onStop != null) {
-          this.onStop();
-        }
       }
 
       async moveToCurrentStep(): void {