Remove the update-ruby script as it's now unnecessary (#36802)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/36802

As we now support a broader range of ruby version, we don't need `update-ruby.sh` anymore
and we also don't need to call it during the set-rn-version script.

Changelog:
[Internal] [Changed] - Remove the update-ruby script as it's now unnecessary

Reviewed By: cipolleschi

Differential Revision: D44670361

fbshipit-source-id: b23abab28ccbd27408e4d76670101faeb463bc6b

scripts/set-rn-version.js

@@ -149,12 +149,6 @@ if (
 // Change react-native version in the template's package.json
 exec(`node scripts/set-rn-template-version.js ${version}`);
 
-// Make sure to update ruby version
-if (exec('scripts/update-ruby.sh').code) {
-  echo('Failed to update Ruby version');
-  exit(1);
-}
-
 // Verify that files changed, we just do a git diff and check how many times version is added across files
 const filesToValidate = [
   'packages/react-native/package.json',

scripts/update-ruby.sh

@@ -1,52 +0,0 @@
-#!/bin/bash
-# Copyright (c) Meta Platforms, Inc. and affiliates.
-#
-# This source code is licensed under the MIT license found in the
-# LICENSE file in the root directory of this source tree.
-
-set -e
-
-if [ "$VERBOSE" = 1 ]; then
-    set -x
-fi
-
-case $(sed --help 2>&1) in
-  *GNU*) sed_i () { sed -i "$@"; };;
-  *) sed_i () { sed -i '' "$@"; };;
-esac
-
-SCRIPTS="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-ROOT="$(dirname "$SCRIPTS")"
-
-die() {
-    echo "ERROR: $*" >&2
-    exit 1
-}
-
-if [ $# -eq 1 ]; then
-    VERSION=$1
-else
-    VERSION=$(ruby --version | cut -d' ' -f2 | cut -dp -f1)
-fi
-
-if [ -z "$VERSION" ]; then
-    die "Please provide an installed/usable Ruby version"
-fi
-
-rm -f Gemfile.lock
-
-export BUNDLE_APP_CONFIG="$ROOT/.bundle"
-cp "$BUNDLE_APP_CONFIG/"* packages/react-native/template/_bundle # sync!
-
-bundle lock
-
-# Disabling getting a potential fatal exit with for crossing filesystem boundary
-export GIT_DISCOVERY_ACROSS_FILESYSTEM=1;
-IS_GIT_REPO=$(git rev-parse --is-inside-work-tree 2> /dev/null || true)
-export GIT_DISCOVERY_ACROSS_FILESYSTEM=0;
-
-if [ "$IS_GIT_REPO" = "true" ]; then
-    git add Gemfile.lock
-else
-    echo "Detected that you're not in Git. If on another SCM, don't forget to commit the edited files."
-fi