Remove the development images, they are no longer useful

Author: macropin

Makefile

@@ -1,4 +1,4 @@
-SUBDIRS := centos7 centos7-develop debian9 debian10 debian11 debian12 debian13 sid
+SUBDIRS := centos7 debian9 debian10 debian11 debian12 debian13
 
 .PHONY: build push clean
 

README.md

@@ -8,17 +8,12 @@ These images are available from the [Docker Hub](https://hub.docker.com/r/panubo
 
 ## Production Images
 
-- [Debian 11 (Bullseye) Base](/debian11) - Recommended for PHP applications that require PHP 7.4
-- [Debian 12 (Bookworm) Base](/debian12) - Recommended for PHP applications that require PHP 8.2
 - [Debian 13 (Trixie) Base](/debian13) - Recommended for PHP applications that require PHP 8.4
-
-## Development Images
-
-- [Debian Sid (unstable)](/sid)
-- [CentOS 7 PHP Development](/centos7)
+- [Debian 12 (Bookworm) Base](/debian12) - Recommended for PHP applications that require PHP 8.2
 
 ## Legacy
 
+- [Debian 11 (Bullseye) Base](/debian11) - Recommended for PHP applications that require PHP 7.4
 - [Debian 10 (Buster) Base](/debian10) - For legacy PHP applications that require PHP 7.3
 - [Debian 9 (Stretch) Base](/debian9) - For legacy PHP applications that require PHP 7.0
 - [CentOS 7 Base](/centos7) - For legacy PHP applications that require PHP 5.4