Deleting a line from a file using sed

[Appending a line say sh /usr/bin/coraldatabase.sh]
[root@vikas Desktop]# echo "sh /usr/bin/coraldatabase.sh" >>' /root/.bashrc

[Deleting a line sh /usr/bin/coraldatabase.sh]
[root@vikas Desktop]# sed -i '/sh \/usr\/bin\/coraldatabase.sh/d' /root/.bashrc
[root@vikas Desktop]#