docs(CHANGELOG.md): remove mention of strict-DI
docs(CHANGELOG.md): remove mention of strict-DI

Strict-DI feature was originally merged into v1.2.x, but was reverted by https://github.com/angular/angular.js/commit/373078a94cf3d525b9ae11a2f2876acb6e26f6a3
campersau/angular.js,campersau/angular.js