If SpecList is of the form Name or Module:Name, where Name is an atom, then spypoints are removed from procedures from module Moudle (if given) with name Name and of any arity.
If SpecList is of the form File:Line, where File is a file name and Line is an integer, the the closest matching breakpoint to line Line in the file File is removed. If Line is a variable, then all breakpoints in file File are removed.
If SpecList is a variable, all spypoints of visible procedures are removed.
Note that spypoints can also be removed with set_flag(Proc, spy, off).
Success:
    [eclipse 1]: [user].
     q.
     p :- q, writeln(hi).
     tty        compiled 132 bytes in 0.00 seconds
    Yes (0.15s cpu)
    [eclipse 2]: spy q.
    spypoint added to q/0.
    Debugger switched on - leap mode
    Yes (0.00s cpu)
    [eclipse 3]: p.
     +(2) 2 CALL  q   %> leap
     +(2) 2 EXIT  q   %> leap
    hi
    Yes (0.00s cpu)
    [eclipse 4]: nospy q.
    spypoint removed from q/0.
    Yes (0.00s cpu)
    [eclipse 5]: p.
    hi
    Yes (0.00s cpu)
    [eclipse 6]: 
Error:
    nospy("l").       (Error 5).