Merge branch 'remove-floral-pro-css-bg' into 'develop'

Remove pro/floral CSS and background, fixes #472

Closes #472

See merge request soapbox-pub/soapbox-fe!342

app/styles/application.scss

@@ -20,7 +20,6 @@
 @import 'donations';
 @import 'dyslexic';
 @import 'demetricator';
-@import 'pro';
 @import 'chats';
 
 // COMPONENTS

app/styles/pro.scss

@@ -1,5 +0,0 @@
-.page--floral { background-image: url('../images/pro_bg/floral--light.svg'); }
-
-body.theme-dark {
-  .page--floral { background-image: url('../images/pro_bg/floral--dark.svg'); }
-}