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/python3/package.sh

@@ -6,6 +6,7 @@ port=python3
 version="${PYTHON_VERSION}"
 workdir="Python-${version}"
 useconfigure="true"
+use_fresh_config_sub=true
 files="${PYTHON_ARCHIVE_URL} ${PYTHON_ARCHIVE} ${PYTHON_ARCHIVE_SHA256SUM}
 https://raw.githubusercontent.com/python/cpython/942dd9f3f77eef08fabddbd9fb883a866ad6d4cb/PC/pycon.ico launcher.ico 55c1e1fcabc2f254a6d02242912359d29f141d11c4892c20375d58b6dcd89ac0"
 auth_type="sha256"

Ports/python3/patches/fix-autoconf.patch

@@ -1,15 +1,3 @@
---- Python-3.10.1/config.sub	2021-12-06 18:23:39.000000000 +0000
-+++ Python-3.10.1/config.sub	2021-12-11 17:17:07.076780435 +0000
-@@ -1474,6 +1474,9 @@
- 	oss*)
- 		os=sysv3
- 		;;
-+	serenity*)
-+		os=serenity
-+		;;
- 	svr4*)
- 		os=sysv4
- 		;;
 --- Python-3.10.1/configure.ac	2021-12-06 18:23:39.000000000 +0000
 +++ Python-3.10.1/configure.ac	2021-12-11 17:23:18.363664786 +0000
 @@ -391,6 +391,9 @@