Meta: Remove unused, defunct lint script leftover from SerenityOS

Author: https://github.com/InvalidUsernameException
Commit: a00a5c9ac5
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/3544
Reviewed-by: https://github.com/AtkinsSJ ✅

Meta/check-markdown.sh

@@ -1,27 +0,0 @@
-#!/usr/bin/env bash
-
-set -eo pipefail
-
-script_path=$(cd -P -- "$(dirname -- "$0")" && pwd -P)
-cd "${script_path}/.."
-
-if [ -z "${MARKDOWN_CHECK_BINARY:-}" ] ; then
-    if ! [ -d Build/lagom/ ] ; then
-        echo "Directory Build/lagom/ does not exist. Skipping markdown check."
-        exit 0
-    fi
-    if ! [ -r Build/lagom/bin/markdown-check ] ; then
-        echo "Lagom executable markdown-check was not built. Skipping markdown check."
-        echo "To enable this check, you may need to run './Meta/ladybird.sh build' first."
-        exit 0
-    fi
-    MARKDOWN_CHECK_BINARY="Build/lagom/bin/markdown-check"
-fi
-
-if [ -z "$LADYBIRD_SOURCE_DIR" ] ; then
-    LADYBIRD_SOURCE_DIR=$(pwd -P)
-    export LADYBIRD_SOURCE_DIR
-fi
-
-# shellcheck disable=SC2086 # Word splitting is intentional here
-find AK Base Documentation Libraries Meta Tests -path Tests/LibWeb/WPT/wpt -prune -o -type f -name '*.md' -print0 | xargs -0 "${MARKDOWN_CHECK_BINARY}" -b "${LADYBIRD_SOURCE_DIR}/Base" $EXTRA_MARKDOWN_CHECK_ARGS README.md CONTRIBUTING.md