How to delete bookmarks and navigation data:

To clear only bookmarks:

- To delete only bookmarks, tap the bookmark icon for 2 seconds, then click Remove.

To clear only History:

- Go to the History page on the X to the right of the link.

To clear your browsing data and saved bookmarks:

- Open the system settings of your Android device.

- Open the Application manager.

- Select the Browser.

- Select Clear Data

Example Android 5

 

Example Android 6