Hello
Thank you for your question and reaching out. I can understand you are having query\issues related to Pined items.
I believe they are default items which is bound within Windows installation.
But you can block it using group policies.
Press Win + R to open the Windows Run command dialog box.
Type gpedit.msc and press Enter to open the LGPE.
Navigate to User Configuration > Administrative Templates > Start Menu and Taskbar.
Double-click on the Do not allow pinning programs to the Taskbar option on the right-hand side pane.
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