Are there any trick or extension to select all instances of selected word in visual studio code, to facilitate editing or deleting those instances without search and replace
According to Key Bindings for Visual Studio Code there's:
Ctrl+Shift+L to select all occurrences of current selection
and
Ctrl+F2 to select all occurrences of current word
You can view the currently active keyboard shortcuts in VS Code in the Command Palette (View -> Command Palette) or in the Keyboard Shortcuts editor (File > Preferences > Keyboard Shortcuts).