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/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 @@