change-version.js: Remove nuspec files (#30161)
change-version.js: Remove nuspec files (#30161)

The version in the nuspec files is updated automatically from package.json through MyGet.ps1
GerHobbelt/bootstrap,tjkohli/bootstrap,coliff/bootstrap,inway/bootstrap,inway/bootstrap,twbs/bootstrap,m5o/bootstrap,zalog/bootstrap,zalog/bootstrap,GerHobbelt/bootstrap,coliff/bootstrap,inway/bootstrap,zalog/bootstrap,m5o/bootstrap,tjkohli/bootstrap,twbs/bootstrap,GerHobbelt/bootstrap