I want to delete a Keyboard shortcut key from all .xlsm file without opening and atonce

hello, sir

i assign a keyboard shortcut key to run my macro e.g Ctrl+g

i want to delete this shortcut key from all .xlsm file with out opening any file form my entire hard drive or folder
thanx alot

As far as I know, the shortkey is assigned to a Macro and not workbooks. You can simply go the the workbook where the Macro is stored, and change/remove the Shortkey from there..

Open the workbook with the Macro > Alt+F8 > Single Click On Macro Name > Options

Hope it helps..