DEVELOPERS: Merge my two entries

Merge my two entries in the DEVELOPERS file, because the mail address
<sven.haardiek@greenbone.net> is outdated.

Signed-off-by: Sven Haardiek <sven.haardiek@iotec-gmbh.de>
[Thomas: fix alphabetic ordering.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

DEVELOPERS

@@ -1819,10 +1819,8 @@ F:	package/hwloc/
 F:	package/powertop/
 
 N:	Sven Haardiek <sven.haardiek@iotec-gmbh.de>
-F:	package/python-influxdb/
-
-N:	Sven Haardiek <sven.haardiek@greenbone.net>
 F:	package/lcdproc/
+F:	package/python-influxdb/
 
 N:	Sven Neumann <neumann@teufel.de>
 F:	package/gstreamer1/gst1-libav/