Remove/rename everything related to Stretch

As Debian Stretch installer is no longer available for download, the
script and tftpd fail with Stretch.

config/debian/menu.cfg

@@ -66,24 +66,6 @@ label oldstableGnomeCrypto
 label separator
     menu label ---
 
-label oldoldstableFirmware
-    menu label Debian stretch amd64 Firmwares
-    kernel installer/debian/stretch/amd64/linux
-    append vga=normal initrd=installer/debian/stretch/amd64/initrd_firm.xz -- quiet
-label oldoldstableAuto
-    menu label Debian stretch amd64 ^PRESEED
-    kernel installer/debian/stretch/amd64/linux
-    IPAPPEND 2
-    append vga=normal initrd=installer/debian/stretch/amd64/initrd_firm.xz auto=true interface=auto netcfg/dhcp_timeout=60 netcfg/choose_interface=auto priority=critical preseed/url=tftp://129.20.203.27/preseed/debian/stretch/preseed.cfg
-label oldoldstableComputeNode
-    menu label Debian stretch amd64 for compute node PRESEED
-    kernel installer/debian/stretch/amd64/linux
-    IPAPPEND 2
-    append vga=normal initrd=installer/debian/stretch/amd64/initrd_firm.xz auto=true interface=auto netcfg/dhcp_timeout=60 netcfg/choose_interface=auto priority=critical preseed/url=tftp://129.20.203.27/preseed/debian/stretch/preseed_computenode.cfg
-
-label separator
-    menu label ---
-
 label unstableAmd64
     menu label Debian ^sid amd64
     kernel installer/debian/sid/amd64/linux

scripts/download_debian.sh

@@ -4,7 +4,6 @@
 # This script will download Debian netboot installer for both AMD64 and i368
 #   1. Debian Stable (Bullseye)
 #   2. Debian oldStable (Buster)
-#   3. Debian oldoldStable (Stretch)
 #   4. Debian Unstable (Sid)
 # and make a sample menu.cfg config file.
 # }}}
@@ -130,7 +129,7 @@ Create ${DEBIAN_INSTALLER_DIR} tree."
 	true > "${DEBIAN_CONFIG_PXE}"
 
 	# Parse all Debian's distribution
-	for DISTRO in bullseye buster stretch sid; do # For "all" Debian's version
+	for DISTRO in bullseye buster sid; do # For "all" Debian's version
 		## Then parse architecture
 		for ARCH in amd64 i386; do                  # For all classic architecture
 		debug_message "Main FOR loop − \

scripts/make_debian_initrd_with_firmware.sh

@@ -2,7 +2,7 @@
 
 # Purpose {{{
 # This script will build a new initrd with some extra firmwares.
-#   1. Download Debian initrd (Bullseye, Buster, Stretch and Sid)
+#   1. Download Debian initrd (Bullseye, Buster and Sid)
 #   2. Download firmwares
 #     * bnx2
 #     * all non-free (for tigon)
@@ -174,7 +174,7 @@ main() {                                                        # {{{
 
 	define_vars
 
-	for DISTRO in bullseye buster stretch sid; do  # For ALL Debian's version
+	for DISTRO in bullseye buster sid; do  # For ALL Debian's version
 
 		debug_message "Main FOR loop − \
 Manage initrd and firmwares for ${RED}${DISTRO}${COLOR_DEBUG} release."