Remove PHP-73 from README's. It is not supported at all.

Signed-off-by: Petr "Stone" Hracek <[email protected]>

Author: phracek

Makefile

@@ -1,6 +1,6 @@
 # Include common Makefile code.
 BASE_IMAGE_NAME = php
-VERSIONS = 7.3 7.4 8.0 8.1 8.2 8.3
+VERSIONS = 7.4 8.0 8.1 8.2 8.3
 OPENSHIFT_NAMESPACES =
 
 # HACK:  Ensure that 'git pull' for old clones doesn't cause confusion.

README.md

@@ -28,7 +28,6 @@ For more information about concepts used in these container images, see the
 Versions
 --------
 PHP versions currently supported are:
-* [php-7.3](7.3)
 * [php-7.4](7.4)
 * [php-8.0](8.0)
 * [php-8.1](8.1)
@@ -83,8 +82,6 @@ on all the supported versions of PHP.**
 
 Usage
 -----
-For information about usage of Dockerfile for PHP 7.3,
-see [usage documentation](7.3/README.md).
 
 For information about usage of Dockerfile for PHP 7.4,
 see [usage documentation](7.4/README.md).