Issue 4443: Don't pass current parser/location into #{...#} call

Issue 4443: Don't pass current parser/location into #{...#} call

The construct #{...#} generates a call to a function embedded-lilypond.
After issue 4422, this call passed (*parser*)/(*location*) arguments
instead of the previous parser/location arguments needed for accessing
the respective values in a different lexical environment.  But since the
respective values are stored in GUILE fluids rather than in lexical
variables now, they are already passed implicitly and unnecessary as
function parameters.