Remove support and documentation for the adsense responsive feature

[lewish]

Does not currently work as intended.
The data-ad-format="auto" behavior will attempt to set the height of the tag based on some JS logic, however the size of the ad container and iframe surrounding it aren't fixed, and won't flow vertically in the way this code expects them to.

The end result is that either excessive white-space shows below the ad or the ad element is clipped within the containing AMP iframe, unless the size of the containing element exactly matches the size that the responsive JS logic will chose.

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[ampsauce]

Tests passed. Automated cross-browser testing via Sauce Labs and Travis CI shows that the JavaScript changes in this pull request are: CONFIRMED

Commit: 09c0cc0c90e141ef1cc73402c43167008afb04c5
Build details: https://travis-ci.org/ampsauce/amphtml/builds/87735326

(Please note that this is a fully automated comment.)

[cramforce]

Could you delete this entire tag?

[lewish]

Done

[cramforce]

Please squash commits! Thanks! LGTM

[ampsauce]

Tests passed. Automated cross-browser testing via Sauce Labs and Travis CI shows that the JavaScript changes in this pull request are: CONFIRMED

Commit: 857824ea2d4dd1199441a2a13b1f1dcc09bd1e5f
Build details: https://travis-ci.org/ampsauce/amphtml/builds/89322409

(Please note that this is a fully automated comment.)

[ampsauce]

Tests passed. Automated cross-browser testing via Sauce Labs and Travis CI shows that the JavaScript changes in this pull request are: CONFIRMED

Commit: 03683584f7486aa98178b0bd7720488925b9195f
Build details: https://travis-ci.org/ampsauce/amphtml/builds/89326301

(Please note that this is a fully automated comment.)

[cramforce]

Friendly ping :)

[ampsauce]

Tests passed. Automated cross-browser testing via Sauce Labs and Travis CI shows that the JavaScript changes in this pull request are: CONFIRMED

Commit: 35798a988d879a4c22f7ef4105d0b058e696d5b1
Build details: https://travis-ci.org/ampsauce/amphtml/builds/90576092

(Please note that this is a fully automated comment.)

[ampsauce]

Tests passed. Automated cross-browser testing via Sauce Labs and Travis CI shows that the JavaScript changes in this pull request are: CONFIRMED

Commit: ef467e7f6fd58973f27406f828e7a82f05b89911
Build details: https://travis-ci.org/ampsauce/amphtml/builds/90578519

(Please note that this is a fully automated comment.)

[ampsauce]

Tests passed. Automated cross-browser testing via Sauce Labs and Travis CI shows that the JavaScript changes in this pull request are: CONFIRMED

Commit: 6ec4cd8
Build details: https://travis-ci.org/ampsauce/amphtml/builds/90580197

(Please note that this is a fully automated comment.)

[lewish]

Commits squashed.

[cramforce]

Thanks! LGTM

[cramforce]

Merged