Remove Duplicate Apps in Mac's Right Click -- "Open With"

1. Open "Terminal" app.
2. Enter the following command in "Terminal"

/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Support/lsregister -kill -r -domain local -domain system -domain user

  3. After that, relaunch Finder by holding down the "Alt" key and right click the finder icon in the Dock, then click "Relaunch".