Remove myself as uploader

Leaving DPT as maintainer, as a replacment has already been found.
See https://lists.debian.org/debian-python/2024/03/msg00132.html

debian/control

@@ -2,7 +2,6 @@ Source: python-mongoengine
 Section: python
 Priority: optional
 Maintainer: Debian Python Team <team+python@tracker.debian.org>
-Uploaders: Håvard F. Aasen <havard.f.aasen@pfft.no>
 Build-Depends:
  debhelper-compat (= 13),
  dh-python,