kdumpctl: remove duplicate statement
    
    Since we also check for mount point of $_target after if/else loop, so
    there is no need to do the same thing specifically in else loop as well.
    
    Remove those duplicate statement from else loop.
    
    Signed-off-by: Pratyush Anand <panand@redhat.com>
    Acked-by: Dave Young <dyoung@redhat.com>