kexec-select-boot: Simplify boot menu entries

Drop the duplicated kernel info which hurts readability, runs off the
end of the menu window. This also makes it easier to identify which
menu option is the default, and more closely resembles the grub menu
shown in a traditional BIOS boot.

Signed-off-by: Matt DeVillier <matt.devillier@puri.sm>

initrd/bin/kexec-select-boot

@@ -99,8 +99,7 @@ get_menu_option() {
 			parse_option
 			n=`expr $n + 1`
 			name=$(echo $name | tr " " "_")
-			kernel=$(echo $kernel | cut -f2 -d " ")
-			MENU_OPTIONS="$MENU_OPTIONS $n ${name}_[$kernel]"
+			MENU_OPTIONS="$MENU_OPTIONS $n ${name} "
 		done < $TMP_MENU_FILE
 
 		whiptail --clear --title "Select your boot option" \