Bug 11662: remove disused member-picupload.pl

Bug 11662: remove disused member-picupload.pl

This script is no longer used, and in addition has problematic
handling of its parameters that could lead to writing to
arbitrary files on the server.

To test:

[1] Verify that member-picupload.pl is no longer referred
    to in the codebase after applying this patch.
[2] Verify that there are no regressions in patron
    photo management.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Found no regressions in removing this script.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(cherry picked from commit 939079de756fdda1ca8f62c48efe0e2e3034ae32)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>