Remove unused Bxxyyy varcode alias system?

[spanezz]

Hello,

in DB-All.e there is the possibility of referring to a variable by alias instead of Bxxyyy code.

The list of aliases has not been really updated since 2007, which makes me think that this feature is not used.

This is the current alias list, for reference:

block,          B01001
station,        B01002
height,         B07030
heightbaro,     B07031
name,           B01019
z,              B10003
p,              B10004
mslp,           B10051
u,              B11003
v,              B11004
t,              B12101
td,             B12103
tmax,           B12011
tmin,           B12012
q,              B13001
rh,             B13003
tp,             B13011
mwd,            B22001
swh,            B22070
pp1d,           B22071
mwp,            B22074
conf,           B33007
data_id,        B33195
no,             B15192
no2,            B15193
o3,             B15194
pm10,           B15195

Is this feature still needed? If not, I'd happily remove it, and removing it could also give some speed improvement.