Deletes the jump to a label on the next line when the label isn't used
anywhere else.

The semantic patch used to find this is:

// <smpl>
@r@
identifier l;
@@

-if (...) goto l;
-l:
// </smpl>
Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>