Remove Emotion conversion checklist from PR template (#6644)

.github/pull_request_template.md

@@ -19,47 +19,3 @@ Remove or strikethrough items that do not apply to your PR.
 - [ ] Checked for **accessibility** including keyboard-only and screenreader modes
 - [ ] Updated the **[Figma](https://www.figma.com/community/file/964536385682658129)** library counterpart
 - [ ] A **[changelog](https://github.com/elastic/eui/blob/main/wiki/documentation-guidelines.md#changelog)** entry exists and is marked appropriately
-
-### Emotion conversion checklist
-
-- **Does it work?**
-- [ ] Output CSS matches the previous CSS / as expected in browsers
-- [ ] Rendered className reads as expected in snapshots and in browsers
-- [ ] Checked component playground (class components wrapped in `withEuiTheme` need to pass `true` as the second argument to its `propUtilityForPlayground` in `src-docs/src/views/{component}/playground.js`)
- 
-- **Unit tests**
-- [ ] [`shouldRenderCustomStyles()`](https://github.com/elastic/eui/blob/6054e9b8310bdb106371c0c9ff8bc48e3e0e594b/src/test/internal/render_custom_styles.tsx) test was added and passes with parent component and any nested `childProps` (e.g. `tooltipProps`)
-- [ ] Removed any `mount()`ed snapshots in favor of `render()` or a more specific assertion
- 
-- **Sass/Emotion conversion process**
-- [ ] Converted all global Sass vars/mixins to JS (e.g. `$euiSize` to `euiTheme.size.base`)
-- [ ] Removed or converted component-specific Sass vars/mixins to exported JS versions, listed removals in changelog, and [manually updated our theme JSON files](https://github.com/elastic/eui/tree/main/src-docs/src/views/theme/_json)
-- [ ] Simplified `calc()` to `mathWithUnits` if possible (if mixing different unit types, this may not be possible)
-- [ ] Added an `@warn` deprecation message within the `global_styling/mixins/{component}.scss` file
-- [ ] Removed component from `src/components/index.scss`
-- [ ] Deleted any `src/amsterdam/overrides/{component}.scss` files (styles within should have been converted to the baseline Emotion styles)
- 
-- **CSS tech debt**
-- [ ] Reduced specificity where possible (usually by reducing nesting and class name chaining)
-- [ ] Wrapped all animations or transitions in `euiCanAnimate`
-- [ ] Used `gap` property to add margin between items if using flex
-- [ ] Converted side specific padding, margin, and position to `-inline` and `-block` [logical properties](https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Logical_Properties) (check inline styles as well as CSS)
- 
-- **DOM cleanup**
-- [ ] Did **not** remove any block/element classNames (e.g. `euiComponent`, `euiComponent__child`)
-- [ ] Deleted any modifier classNames or maps if not being used in Kibana. **Before doing this step**:
-    - [ ] Search/grep through Kibana's codebase for `{euiComponent}-` (case sensitive) to check for source code usage of modifier classes
-    - [ ] If usages exist, consider converting to a `data` attribute so that consumers still have something to hook into
- 
-- **Kibana due diligence**
-- Pre-emptively check how your conversion will impact the next Kibana upgrade. This entails searching/grepping through Kibana (excluding `**/target, **/*.snap, **/*.storyshot` for less noise) for `eui{Component}` (case sensitive) to find:
-- [ ] Any test/query selectors that will need to be updated
-- [ ] Any Sass or CSS that will need to be updated, particularly if a component Sass var was deleted
-- [ ] Any direct className usages that will need to be refactored (e.g. someone calling the `euiBadge` class on a div instead of simply using the `EuiBadge` component)
- 
-- **Extras/nice-to-have**
-- [ ] Documentation pass:
-    - [ ] Converted any remaining `.js` docs files to TS
-    - [ ] Misc cleanup of docs code (e.g. combine imports to single `from '../src'`, replace `<React.Fragment>` with `<>`)
-- [ ] Check for issues in the backlog that could be a quick fix for that component
-- [ ] Optional component/code cleanup: consider splitting up the component into multiple children if it's overly verbose or difficult to reason about