revert: fix(Scope): aggressively clean up scope on $destroy to minimize leaks
revert: fix(Scope): aggressively clean up scope on $destroy to minimize leaks

This reverts commit e9e14fef4d9bca8434ffe7799538894ff9ed098d.

The commit is causing regressions.

Closes #6897

ggershoni/angular.js,ggershoni/angular.js,ggershoni/angular.js,ggershoni/angular.js