Chore: Remove postinstall script

[madsrasmussen]

Description

The 14.2-rc package can't be installed because the generate:tsconfig script can't run. The issue is caused by the postinstall script that runs when the package is installed from npm. We don't ship any of our devops files which makes the script fail.

How to test

You can test a local version of the package to check that it installs correctly:

In the backoffice repo

1. npm i to ensure all dependencies are installed
2. npm run build:for:npm build the output files for npm
3. npm pack pack a local version of the npm package
4. Copy the package to a local Umbraco project where it should be installed

In your Umbraco project

1. Point to the local version in your package.json file: "@umbraco-cms/backoffice": "./umbraco-cms-backoffice-14.2.0.tgz"
2. Run npm i in your Umbraco project
3. 🤞 The package works

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Chore (minor updates related to the tooling or maintenance of the repository, does not impact compiled assets)

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[nielslyngsoe]

looks good