Revert "nixos/boot/rasbperrypi: add support for boot.initrd.secret with uboot (#240358)" (#257251)

This reverts commit 94e939985b.

nixos/modules/system/boot/loader/generic-extlinux-compatible/extlinux-conf-builder.sh

@@ -70,33 +70,13 @@ copyToKernelsDir() {
 addEntry() {
     local path=$(readlink -f "$1")
     local tag="$2" # Generation number or 'default'
-    local current="$3" # whether this is the current/latest generation
 
     if ! test -e $path/kernel -a -e $path/initrd; then
         return
     fi
 
-    if test -e "$path/append-initrd-secrets"; then
-        local initrd="$target/nixos/$(basename "$path")-initramfs-with-secrets"
-        cp $(readlink -f "$path/initrd") "$initrd"
-        chmod 600 "${initrd}"
-        chown 0:0 "${initrd}"
-        filesCopied[$initrd]=1
-
-        "$path/append-initrd-secrets" "$initrd" || if test "${current}" = "1"; then
-            echo "failed to create initrd secrets for the current generation." >&2
-            echo "are your \`boot.initrd.secrets\` still in place?" >&2
-            exit 1
-        else
-            echo "warning: failed to create initrd secrets for \"$path\", an older generation" >&2
-            echo "note: this is normal after having removed or renamed a file in \`boot.initrd.secrets\`" >&2
-        fi
-    else
-        copyToKernelsDir "$path/initrd"; initrd=$result
-    fi
-
     copyToKernelsDir "$path/kernel"; kernel=$result
-
+    copyToKernelsDir "$path/initrd"; initrd=$result
     dtbDir=$(readlink -m "$path/dtbs")
     if [ -e "$dtbDir" ]; then
         copyToKernelsDir "$dtbDir"; dtbs=$result
@@ -150,20 +130,18 @@ MENU TITLE ------------------------------------------------------------
 TIMEOUT $timeout
 EOF
 
-addEntry $default default 1 >> $tmpFile
+addEntry $default default >> $tmpFile
 
 if [ "$numGenerations" -gt 0 ]; then
     # Add up to $numGenerations generations of the system profile to the menu,
     # in reverse (most recent to least recent) order.
-    current=1
     for generation in $(
             (cd /nix/var/nix/profiles && ls -d system-*-link) \
             | sed 's/system-\([0-9]\+\)-link/\1/' \
             | sort -n -r \
             | head -n $numGenerations); do
         link=/nix/var/nix/profiles/system-$generation-link
-        addEntry $link $generation $current
-        current=0
+        addEntry $link $generation
     done >> $tmpFile
 fi