Answer:
Hello dave,
Can you give me that command I could not get that in your reply.
I also tried to do the following way:
1. Took backup of the files by downloading them to file system.
2. Manually delete the pages from designer (_catalogs/master pages, Pages/default.aspx)
3. Now tried to deploy them through feature.
But I found lot of errors after deployment. Can you suggest me if I followed the correct way of doing this.
I also read that we can achieve this by FeatureActivated event handler.