To remove a print job from the queue for your default printer:
lpq Rank Owner Job Files active joe 483 overheads.ps 2nd sarah 484 /tmp/RFC137 3rd tony 485 report lprm 484
The user sarah has removed their print job from the the printer queue.
To remove a print job that has been placed in another printer's queue:
lpq -Pps3 Rank Owner Job Files active jim 112 doc.ps 2nd sally 113 presentation.ps 3rd tom 114 draft lprm -Pps3 113
The user sally has removed her print job from the queue for the printer ps3.