nginx: remove the nossl variant

For a smooth upgrade use a dummy depending on `nginx-ssl`.
The dummies will be removed after a transition period.

Signed-off-by: Peter Stadler <peter.stadler@student.uibk.ac.at>

net/nginx/Makefile

@@ -546,11 +546,15 @@ $(eval $(call BuildPackage,nginx-mod-luci))
 # It is for smoothly substituting nginx and nginx-mod-luci-ssl (by nginx-ssl 
 # respectively nginx-mod-luci).
 
-Package/nginx = $(Package/nginx-ssl)
-
-Package/nginx/install = $(Package/nginx-ssl/install)
+define Package/nginx
+  TITLE:=Dummy package for transition when upgrading.
+  DEPENDS:=+nginx-ssl
+  PKGARCH:=all
+endef
 
-Package/nginx/prerm = $(Package/nginx-ssl/prerm)
+define Package/nginx/install
+	$(INSTALL_DIR) $(1)/usr/bin
+endef
 
 $(eval $(call BuildPackage,nginx))