refactor(iso): If we fail to pick a single EFI partition just exit (#1)

setup.sh

@@ -125,26 +125,9 @@ function select_part () {
     if we_have_exactly_one_part "${part_type}" "${parts}"; then
         part="${parts}"
     else
-        if [[ "${part_type}" == 'zfs' ]]; then
-            2> printf -- '%s\n' 'We have more than one ZFS (BF00) partition to pick for installation. Cowardly exiting ...'
+        2> printf -- '%s\n' 'More than one '"${part_type^^}"' partition to pick for installation. Cowardly exiting ...'
         exit 77
     fi
-        printf -- '%s\n' 'Which '"${part_type^^}"' partition do you want us to use?'
-        while IFS= read -r found_part; do
-            enriched_parts+=("'${found_part}'"' (aka ID '"'$(get_drive_id "${found_part}")'"')')
-        done <<<"${parts}"
-        enriched_parts_count="${#enriched_parts[@]}"
-        select part in "${enriched_parts[@]}"; do
-            part_number="${REPLY}"
-            if [[ "${part_number}" -le "${enriched_parts_count}" ]]; then
-                part="$(sed "${REPLY}q;d" <<<"${parts}")"
-                printf -- '%s\n' 'You'"'"'ve selected '"'${part}'"' ...'
-                break
-            else
-                printf -- '%s\n' 'Invalid option, please choose between 1 and '"${enriched_parts_count}"
-            fi
-        done
-    fi
     printf -- '%s' "${part}"
     return 0
 }