fix(demo): remove useless dependency on `webpack` (already referenced by CLI)
fix(demo): remove useless dependency on `webpack` (already referenced by CLI)

Closes #163

tinesoft/generator-ngx-library,tinesoft/generator-ng-plugin,tinesoft/generator-ng-plugin,tinesoft/generator-ng-plugin,tinesoft/generator-ngx-library,tinesoft/generator-ngx-library,tinesoft/generator-ngx-library