Remove php 5.1

Author: sboldyreva

docs/els-for-languages/README.md

@@ -28,7 +28,7 @@ Other distros upon request.
 
 ### Supported versions
 
-**CentOS, CloudLinux, AlmaLinux, Oracle Linux, etc.:** 5.1.6, 5.2.17, 5.3.29, 5.4.45, 5.5.38, 5.6.40, 7.0.33, 7.1.33, 7.2.34, 7.3.33, 7.4.33, 8.0.30, 8.1.27, 8.2, 8.3
+**CentOS, CloudLinux, AlmaLinux, Oracle Linux, etc.:** 5.2.17, 5.3.29, 5.4.45, 5.5.38, 5.6.40, 7.0.33, 7.1.33, 7.2.34, 7.3.33, 7.4.33, 8.0.30, 8.1.27, 8.2, 8.3
 
 **Ubuntu:** 5.6.40, 7.0.33, 7.1.33, 7.2.34, 7.3.33, 7.4.33, 8.0.30, 8.1.27, 8.2, 8.3