merge: properly remove %n / %N references

- use %d instead of %n for opkg feed identifiers
- remove %n / %N references from version files

Fixes bf5cef47b3 merge: release/banner: drop release name and update banner.
Fixes FS#1213.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

package/base-files/files/etc/openwrt_release

@@ -1,8 +1,7 @@
 DISTRIB_ID='%D'
 DISTRIB_RELEASE='%V'
 DISTRIB_REVISION='%R'
-DISTRIB_CODENAME='%n'
 DISTRIB_TARGET='%S'
 DISTRIB_ARCH='%A'
-DISTRIB_DESCRIPTION='%D %N %V %C'
+DISTRIB_DESCRIPTION='%D %V %C'
 DISTRIB_TAINTS='%t'

package/base-files/image-config.in

@@ -199,8 +199,6 @@ if VERSIONOPT
 			 %v .. Configured release version number or "snapshot", lowercase
 			 %C .. Configured release revision code or value of %R, uppercase
 			 %c .. Configured release revision code or value of %R, lowercase
-			 %N .. Release name, uppercase
-			 %n .. Release name, lowercase
 			 %D .. Distribution name or "OpenWrt", uppercase
 			 %d .. Distribution name or "openwrt", lowercase
 			 %T .. Target name