Bug 1881094 - 5. remove stylelint exclusions for firefox-android...

Bug 1881094 - 5. remove stylelint exclusions for firefox-android r=android-reviewers,frontend-codestyle-reviewers,gl

Differential Revision: https://phabricator.services.mozilla.com/D207207

.stylelintignore

@@ -77,11 +77,10 @@ layout/style/test/gtest/example.css
 layout/style/test/mapped2.css
 layout/style/test/unstyled-frame.css
 
-# TODO - Bug 1881094: temporarily ignored for firefox-android migration
+# Bug 1893763
 mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readerview.css
-mobile/android/android-components/components/feature/webcompat/src/main/assets/extensions/webcompat/about-compat/aboutCompat.css
+# Three dashes at top of file (for Jekyll?) cause syntax error:
 mobile/android/android-components/docs/assets/main.scss
-mobile/android/fenix/app/src/main/assets/shared_error_style.css
 
 # Empty test files:
 netwerk/test/mochitests/test1.css

mobile/android/fenix/app/src/main/assets/shared_error_style.css

@@ -48,7 +48,6 @@ li:not(:last-of-type) {
 }
 
 h1 {
-  margin: 0;
   padding: 0;
   margin: var(--moz-vertical-spacing) 0;
   color: var(--header-color);