d/control: Fix Uploaders field to follow pureOS

And also avoid multiline Uploaders field to make lintian happy.

debian/control

@@ -3,10 +3,7 @@ Section: comm
 Priority: optional
 Maintainer: PureOS Maintainers <pureos-project@lists.puri.sm>
 XSBC-Maintainer: DebianOnMobile Maintainers <debian-on-mobile-maintainers@alioth-lists.debian.net>
-Uploaders: Evangelos Ribeiro Tzaras <evangelos.tzaras@puri.sm>
-XSBC-Uploaders:
- Evangelos Ribeiro Tzaras <devrtz-debian@fortysixandtwo.eu>,
- Henry-Nicolas Tourneur <debian@nilux.be>,
+Uploaders: Evangelos Ribeiro Tzaras <devrtz-debian@fortysixandtwo.eu>, Henry-Nicolas Tourneur <debian@nilux.be>,
 Build-Depends:
  debhelper-compat (= 12),
  desktop-file-utils,