Linting has recently been removed from the examples provided in angular.io
(see PRs #43592 and #43746) such removal effects the downloadable and
stackblitz examples but linting is still generally used in the examples
in the aio project itself (they are being migrated from tslint to eslint in
PR #43218) thus eslint directive comments are still necessary in the code itself.
So the comments need to be present but need not to be exposed to the users
(not in the zips, stackblitzes nor docs themselves), these changes are
removing such comments during the examples' parsing phase (effectively
removing them from all three sources mentioned above).
Original discussion: https://github.com/angular/angular/pull/43218#discussion_r697305494resolves#43788
PR Close#43831
