fingering-engraver.cc: don't set Fingering.pitch

fingering-engraver.cc: don't set Fingering.pitch

This grob property does not actually exist.

[lemzwerg, 2018-08-03 03:24:40]

LGTM.  I suggest that you do such trivial clean-ups directly in the git
repository, not wasting your time with setting up an issue.

[dak, 2018-08-03 06:52:29]

On 2018/08/03 03:24:40, lemzwerg wrote:
> LGTM.  I suggest that you do such trivial clean-ups directly in the git
> repository, not wasting your time with setting up an issue.

If Han-Wen did not see fit to remove the line but instead went to the trouble of
adding a "WTF?" comment, I think removing without an opportunity for people to
check would be optimistic.  Also I leave a record that way.

[hanwenn, 2018-08-03 08:25:32]

LGTM

[dak, 2018-08-03 08:51:12]

On 2018/08/03 08:25:32, hanwenn wrote:
> LGTM

Thanks.  For the record, I am currently renaming get_property and set_property
for grobs since I want to change their internals in a manner not compatible with
the existing get_property macro (which does not get to know what kind of class
it is being used on).  So I did a rename job for all known grob properties
(quite a nuisance because probably 15% of stuff like "direction" or "text" ended
up not being a grob property after all) and cleaned up afterwards.  And a few
things just didn't clean up.

This is one.