Drop php5

php5 has been completely removed from Sisyphus following its EOL:
http://git.altlinux.org/tasks/archive/done/_214/219816/

features.in/server/config.mk

@@ -44,7 +44,7 @@ use/server/groups/services: use/server
 	@$(call add,MAIN_GROUPS,server/dhcp server/dns server/mail)
 	@$(call add,MAIN_GROUPS,server/apache2 server/nginx)
 	@$(call add,MAIN_GROUPS,server/mariadb server/pgsql)
-	@$(call add,MAIN_GROUPS,server/php5 server/php7)
+	@$(call add,MAIN_GROUPS,server/php7)
 	@$(call add,MAIN_GROUPS,server/ftp server/rsync)
 	@$(call add,MAIN_GROUPS,server/kvm)
 	@$(call add,DEFAULT_SERVICES_DISABLE,php7-fpm)

pkg.in/groups/server/php5.directory

@@ -1,10 +0,0 @@
-[Desktop Entry]
-Encoding=UTF-8
-Type=Directory
-Name=PHP 5 support
-X-Alterator-PackageList=server/php5
-X-Alterator-Required=no
-X-Alterator-Conflicts=server/php7
-Name[ru_RU]=Поддержка PHP 5
-Categories=Server;Networking
-

pkg.in/lists/server/php5

@@ -1,22 +0,0 @@
-apache2-mod_php5
-php5
-php5-cgi
-php5-curl
-php5-dba
-php5-dom
-php5-exif
-php5-fileinfo
-php5-fpm-fcgi
-php5-gd2
-php5-imap
-php5-ldap
-php5-mbstring
-php5-mcrypt
-php5-memcache
-php5-mhash
-php5-mysql
-php5-pgsql
-php5-suhosin
-php5-xmlrpc
-php5-xsl
-php5-zip

pkg.in/lists/tagged/server+zabbix

@@ -1,5 +1,5 @@
 zabbix-server-mysql
-zabbix-phpfrontend-apache2-mod_php5
+zabbix-phpfrontend-apache2-mod_php7
 zabbix-agent
 
 zabbix-preinstall
@@ -7,10 +7,10 @@ zabbix-preinstall
 MySQL-server
 MySQL-client
 
-php5-gd2
-php5-mbstring
-php5-mysqli
-php5-sockets
+php7-gd2
+php7-mbstring
+php7-mysqli
+php7-sockets
 
 postfix
 mailx