refactor(@angular/cli): remove v1 postinstall update check #20146
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This postinstall script was put in place during the v6.0 timeframe to aid users migrating from the v1.x configuration file format by displaying a message instructing the user to run
ng update
.The
ng update
migration is still functional and users can still use it to migrate from a v1.x project. However, the postinstall script (which can potentially perform a large amount of filesystem calls) will no longer be run for every install of the Angular CLI.