please.sh: retire the render_release_notes_and_mail function

This function was used to prepare the release notes and the announcement
mail in the Azure Pipelines in which Git for Windows was released.

However, nowadays this task is performed elsewhere, specifically
https://github.com/git-for-windows/git-for-windows-automation/blob/main/update-scripts/tag-git.sh

For that reason, we do not need to carry this function anymore.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Author: dscho

please.sh

@@ -786,22 +786,6 @@ pkg_copy_artifacts () {
 	create_bundle_artifact
 }
 
-set_version_from_tag_name () {
-	version="${1#refs/tags/}"
-	version="${version#v}"
-	ver="$(echo "$version" | sed -n \
-		's/^\([0-9]*\.[0-9]*\.[0-9]*\(-rc[0-9]*\)\?\)\.windows\(\.1\|\(\.[0-9]*\)\)$/\1\4/p')"
-	test -n "$ver" ||
-	die "Unexpected version format: %s\n" "$version"
-
-	display_version="$ver"
-	case "$display_version" in
-	*.*.*.*)
-		display_version="${display_version%.*}(${display_version##*.})"
-		;;
-	esac
-}
-
 version_from_release_notes () {
 	sed -e '1s/^# Git for Windows v\(.*\) Release Notes$/\1/' -e 1q \
 		"$sdk64/usr/src/build-extra/ReleaseNotes.md"
@@ -1136,100 +1120,6 @@ bundle_pdbs () { # [--directory=<artifacts-directory] [--unpack=<directory>] [--
 	done
 }
 
-render_release_notes_and_mail () { # <output-directory> <next-version> [<sha-256>...]
-	test -d "$1" || mkdir "$1" || die "Could not create '%s'\n" "$1"
-	case "$2" in
-	*-[0-9]*)
-		ver="${2#v}"
-		display_version="prerelease-$2"
-		;;
-	v[0-9]*.windows.[0-9]|v[1-9]*.windows.[1-9][0-9])
-		set_version_from_tag_name "$2"
-		;;
-	*)
-		die "Unhandled version: %s\n" "$2"
-		;;
-	esac
-
-	name="Git for Windows $display_version"
-	text="$(sed -n \
-		"/^## Changes since/,\${s/## //;:1;p;n;/^## Changes/q;b1}" \
-		<"$sdk64"/usr/src/build-extra/ReleaseNotes.md)"
-	checksums="$(printf '%s | %s\n' \
-		Git-"$ver"-64-bit.exe $3 \
-		Git-"$ver"-32-bit.exe $4 \
-		PortableGit-"$ver"-64-bit.7z.exe $5 \
-		PortableGit-"$ver"-32-bit.7z.exe $6 \
-		MinGit-"$ver"-64-bit.zip $7 \
-		MinGit-"$ver"-32-bit.zip $8 \
-		MinGit-"$ver"-busybox-64-bit.zip $9 \
-		MinGit-"$ver"-busybox-32-bit.zip ${10} \
-		Git-"$ver"-64-bit.tar.bz2 ${11} \
-		Git-"$ver"-32-bit.tar.bz2 ${12})"
-	body="$(printf "%s\n\n%s\n%s\n%s" "$text" \
-		'Filename | SHA-256' '-------- | -------' "$checksums")"
-	echo "$body" >"$1/release-notes-$ver"
-
-	# Required to render the release notes for the announcement mail
-	type w3m ||
-	case "$(uname -s)" in
-	Linux)
-		sudo apt-get -y install w3m ||
-		die "Could not install w3m\n"
-		;;
-	MINGW*|MSYS)
-		sdk="$sdk64" require w3m
-		;;
-	*)
-		die "Could not install w3m\n"
-		;;
-	esac
-
-	url=https://gitforwindows.org/
-	case "$display_version" in
-	prerelease-*)
-		url=https://gitforwindows.org/git-snapshots/
-		;;
-	*-rc*)
-		url=https://github.com/git-for-windows/git/releases/tag/$2
-		;;
-	esac
-
-	prefix="$(printf "%s\n\n%s%s\n\n    %s\n" \
-		"Dear Git users," \
-		"I hereby announce that Git for Windows " \
-		"$display_version is available from:" \
-		"$url")"
-	rendered="$(echo "$text" |
-		if type markdown >&2
-		then
-			markdown |
-			LC_CTYPE=C w3m -dump -cols 72 -T text/html
-		else
-			"$sdk64/git-cmd.exe" --command=usr\\bin\\sh.exe -l -c \
-				'markdown |
-				LC_CTYPE=C w3m -dump -cols 72 -T text/html'
-		fi)"
-	printf "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n\n%s\n\n%s\n\n%s\n\n%s\n%s\n" \
-		"From $version Mon Sep 17 00:00:00 2001" \
-		"From: $(git var GIT_COMMITTER_IDENT | sed -e 's/>.*/>/')" \
-		"Date: $(date -R)" \
-		"To: git-for-windows@googlegroups.com, git@vger.kernel.org, git-packagers@googlegroups.com" \
-		"Subject: [ANNOUNCE] Git for Windows $display_version" \
-		"Content-Type: text/plain; charset=UTF-8" \
-		"Content-Transfer-Encoding: 8bit" \
-		"MIME-Version: 1.0" \
-		"Fcc: Sent" \
-		"$prefix" \
-		"$rendered" \
-		"$checksums" \
-		"Ciao," \
-		"$(git var GIT_COMMITTER_IDENT | sed -e 's/ .*//')" \
-		>"$1/announce-$ver"
-
-	echo "Announcement saved as $1/announcement-$ver" >&2
-}
-
 release_sdk () { # <version>
 	version="$1"
 	tag=git-sdk-"$version"