Win7 How to remove a shortcut from the taskbar

I don't know what changed the properties of the system.
This method has been found on the Internet to solve the problem:
A: To solve this problem, you can try the following methods:
Enter the following commands separately into the start-run
1, cmd/k reg add "hkey_classes_root\lnkfile"/V isshortcut/f

2, cmd/k reg add "hkey_classes_root\piffile"/V isshortcut/f

3. cmd/k taskkill/f/im Explorer.exe & Explorer.exe

You can now drag and drop the icon to the taskbar or right-click on the taskbar for Quick Launch to remove it from the taskbar.

Win7 How to remove a shortcut from the taskbar