In the Windows 10 Preview Builds released to the public, Microsoft has added two new buttons in the task bar in addition to Start button. One of them allows users to do search and the other allows them to switch between virtual desktops. While many people may find these buttons useful, some of the users want to remove them from the taskbar. Even though the current preview build does not allow users to remove these buttons, upcoming preview build will add an option for it. IT Home recently posted a screenshot of the feature. When you right click the task bar, you will have option to show/hide search and task view button.