Finally, new Twitter profile has this feature built-in. 
This project is now deprecated and no longer supported.

Are you annoyed by the @replies on Twitter? Be it on any profile or news feed, it looks like a chat session. Now you can hide these annoying replies and you can see the genuine tweets. Install this extension on Google Chrome and you will find a Hide Replies button on Twitter, clicking it will hide all the replies, clicking it again will show the replies.

Please share this tool with your followers.

Install it by clicking the link below then click ADD TO CHROME

https://chrome.google.com/webstore/detail/hide-twitter-replies/bobjjmpbpopkbnlpfpcjmncogijmiklm?hl=en