Merge pull request #71081 from Expensify/revert-70261-perf/migration-to-stylesheet

Revert "[No QA] Migrate static styles to use StyleSheet.create"

(cherry picked from commit 9826018)

(cherry-picked to staging by roryabraham)

Author: roryabraham

contributingGuides/STYLING.md

@@ -4,11 +4,7 @@
 
 Styles can either be theme-related or not. "Theme-related" means that a style contains some sort of color attributes (backgroundColor, color, borderColor). "Non-theme-related" styles may not contain no color attributes.
 
-All non-theme-related styles must be defined in the `/styles` directory and `styles.js` contains the final export after gathering all appropriate styles. There are also many helper styles available for direct use in components.
-
-The styles are grouped into:
-- `staticStyles` - object wrapped into `StyleSheet.create()` which contains static styles based on the `theme`.
-- `dynamicStyles` - object that contains functions which return dynamic styles
+All non-theme-related styles must be defined in the `/styles` directory and `styles.js` contains the final export after gathering all appropriate styles. Unlike some React Native applications, we are not using `StyleSheet.create()` and instead store styles as plain JS objects. There are also many helper styles available for direct use in components.
 
 All styles that contain theme colors have to be defined in the `ThemeStylesProvider` component, as those need to be dynamically created and animated.