Ports: Remove some config.sub patches and download a fresh one if needed

All of these patches did the same thing, which is already in upstream
config.sub.
With this change, we need only add `use_fresh_config_sub=true` to
the package.sh file.
Note that this is not done automatically in case the port has a modified
config.sub file.

Ports/nano/package.sh

@@ -2,6 +2,7 @@
 port=nano
 version=5.8
 useconfigure="true"
+use_fresh_config_sub=true
 files="https://www.nano-editor.org/dist/v5/nano-${version}.tar.xz nano-${version}.tar.xz
 https://www.nano-editor.org/dist/v5/nano-${version}.tar.xz.asc nano-${version}.tar.xz.asc"
 configopts=("--target=${SERENITY_ARCH}-pc-serenity" "--disable-browser" "--disable-utf8")

Ports/nano/patches/fix-autoconf.patch

@@ -1,12 +0,0 @@
-diff --git a/config.sub.orig b/config.sub
-index 63c1f1c8b..f14d29e3d 100755
---- a/config.sub.orig
-+++ b/config.sub
-@@ -1696,6 +1696,7 @@ case $os in
- 	# The portable systems comes first.
- 	# Each alternative MUST end in a * to match a version number.
- 	gnu* | android* | bsd* | mach* | minix* | genix* | ultrix* | irix* \
-+	     | serenity* \
- 	     | *vms* | esix* | aix* | cnk* | sunos | sunos[34]* \
- 	     | hpux* | unos* | osf* | luna* | dgux* | auroraux* | solaris* \
- 	     | sym* |  plan9* | psp* | sim* | xray* | os68k* | v88r* \