How to remove ASM disk from v$asm_disk with "FORMER" status

Dear Experts,

I had dropped an unused ASM DISKGROUP succesfully. When query from v$asm_disk, it shows

 select name,path,HEADER_STATUS,group_number from v$asm_disk;

NAME                           PATH                      HEADER_STATU GROUP_NUMBER
------------------------------ ------------------------- ------------ ------------
                               /dev/rtest_asm11      FORMER                  0

Question:

Does it possible to clean up this entry from the asm registry? If yes, how to do that? Many thanks.