grub: not show "ALT" before @relname@ in 20install2.cfg

features.in/grub/cfg.in/20install2.cfg

 
 default='linux'
-menuentry 'Install ALT @relname@' --hotkey 'i' --id 'linux' {
+menuentry 'Install @relname@' --hotkey 'i' --id 'linux' {
   linux@linux_suffix@ @boot_path@/vmlinuz changedisk fastboot automatic=method:cdrom ramdisk_size=@altinst_size@ vga=@bootvga@ @bootargs@
   initrd@linux_suffix@ @boot_path@/full.cz
 }