[PROJ] [PROJ 6.1.0] Tests failed on vertical grid shift for France mainland onshore

[Even Rouault]

Hi Didier,

I assume that you have run the tests with the RAF09.gtx file present and not 
the RAF18.gtx one ?
If so the failure is expected. 'make check' will run fine with just the 
default proj-datumgrid is installed, but the presence of other grids might 
cause changes in results. If the new grid RAF18.gtx from proj-datumgrid-
europe-1.3 is present, you'll get also a slightly different result. Nothing to 
worry about.

> RAF18.gtx is related to France mainland onshore while RAF09.gtx is related
> to French Antilla.

Hum, not according to the EPSG dataset... Both are registered against 
EPSG:1326 area of use 'France - mainland onshore'. Maybe you are confusing 
RAF09.gtx (the former version of RAF18.gtx) with RGAF09 which is indeed for 
French Antilla.

> -- Remove supression entry of EPSG:8371 ("RGF93 to NGF IGN69 height (2)",
> using RAF09.mnt) by -- EPSG:8885 ("RGF93 to NGF IGN69 height (3)", using
> RAF18.tac), since -- we have only RAF09.mnt in proj-datumgrid-europe
> -- Our code to remove superseded operations should probably take into
> account grid availability DELETE FROM "supersession" WHERE
> superseded_table_name = 'grid_transformation' AND superseded_auth_name =
> 'EPSG' AND superseded_code = '8371' AND
>                                  replacement_table_name =
> 'grid_transformation' AND replacement_auth_name = 'EPSG' AND
> replacement_code = '8885' AND
>                                  source = 'EPSG';
> 

The above entry dates back indeed to PROJ 6.0 / proj-datumgrid-europe-1.2 when 
there was only the RAF09.gtx grid available, and not RAF18. The removal of 
this deprecation entry doesn't hurt by itself, although it is no longer be 
necessary. So I've just removed it in master.

Even

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