Revert "Force flash message width to 80% of screen on small devices"

This reverts commit e731bb86.

Changelog.md

@@ -7,7 +7,6 @@
 * Correctly skip setting sidekiq logfile on Heroku [#6500](https://github.com/diaspora/diaspora/pull/6500)
 * Fix notifications for interactions by non-contacts [#6498](https://github.com/diaspora/diaspora/pull/6498)
 * Fix issue where the publisher was broken on profile pages [#6503](https://github.com/diaspora/diaspora/pull/6503)
-* Limit flash message width on small devices [#6529](https://github.com/diaspora/diaspora/pull/6529)
 
 ## Features
 

app/assets/stylesheets/_flash_messages.scss

@@ -50,11 +50,4 @@
     background-color: #CA410B;
     border-color: darken(#CA410B, 10%);
   }
-
-  @media (max-width: $grid-float-breakpoint-max) {
-    .flash-message {
-      max-width: 80%;
-      min-width: 80%;
-    }
-  }
 }