⏪ Revert import changes for assertions

[rcebulko]

Basically a revert of #32828

I was trying to update imports of assertions in waves. During my attempt at a second wave, I discovered a bunch of mostly untested functionality depending on the existing AMP assertion logic, suggesting the swap is not quite so clean. Undoing these changes, and will just make src/log.js#assert wrap src/core/assert.js#assertion; new code/code in src/{context,preact,core} can use the dependency-free helper, and existing AMP code can me migrated manually (or not).

[amp-owners-bot]

Hey @Jiaming-X! These files were changed:

extensions/amp-ad-network-adsense-impl/0.1/adsense-shared-state.js

Hey @jeffkaufman! These files were changed:

extensions/amp-ad-network-adsense-impl/0.1/adsense-shared-state.js
extensions/amp-ad-network-doubleclick-impl/0.1/test/test-doubleclick-sra.js

Hey @alanorozco! These files were changed:

extensions/amp-connatix-player/0.1/amp-connatix-player.js
extensions/amp-delight-player/0.1/amp-delight-player.js
extensions/amp-kaltura-player/0.1/amp-kaltura-player.js
extensions/amp-o2-player/0.1/amp-o2-player.js
extensions/amp-redbull-player/0.1/amp-redbull-player.js
extensions/amp-springboard-player/0.1/amp-springboard-player.js

Hey @gmajoulet, @newmuis, @Enriqe! These files were changed:

extensions/amp-story/1.0/animation-presets.js
extensions/amp-story/1.0/bookend/components/article.js
extensions/amp-story/1.0/bookend/components/cta-link.js
extensions/amp-story/1.0/bookend/components/heading.js
extensions/amp-story/1.0/bookend/components/landscape.js
extensions/amp-story/1.0/bookend/components/portrait.js
extensions/amp-story/1.0/bookend/components/text-box.js
extensions/amp-story/1.0/live-story-manager.js
extensions/amp-story/1.0/pagination-buttons.js
extensions/amp-story/1.0/simple-template.js

[lgtm-com]

This pull request introduces 1 alert when merging 30aee38 into 843d597 - view on LGTM.com

new alerts:

• 1 for Invocation of non-function

[lgtm-com]

This pull request introduces 1 alert when merging 77710c7 into 7dac0bb - view on LGTM.com

new alerts:

• 1 for Invocation of non-function