Remove ruby DText implementation (#3206).

app/helpers/application_helper.rb

@@ -49,20 +49,12 @@ module ApplicationHelper
     raw %{<a href="#{h(url)}" #{attributes}>#{text}</a>}
   end
 
-  def format_text(text, ragel: true, **options)
-    if ragel
-      raw DTextRagel.parse(text, **options)
-    else
-      DText.parse(text)
-    end
+  def format_text(text, **options)
+    raw DTextRagel.parse(text, **options)
   end
 
-  def strip_dtext(text, options = {})
-    if options[:ragel]
-      raw(DTextRagel.parse_strip(text))
-    else
-      DText.parse_strip(text)
-    end
+  def strip_dtext(text)
+    raw(DTextRagel.parse_strip(text))
   end
 
   def error_messages_for(instance_name)

app/helpers/post_appeals_helper.rb

@@ -4,7 +4,7 @@ module PostAppealsHelper
     html << '<ul>'
 
     post.appeals.each do |appeal|
-      reason = DText.parse_inline(appeal.reason).html_safe
+      reason = format_text(appeal.reason, inline: true)
       user = link_to_user(appeal.creator)
       if CurrentUser.is_moderator?
         ip = "(#{link_to_ip(appeal.creator_ip_addr)})"

app/helpers/post_flags_helper.rb

@@ -5,7 +5,7 @@ module PostFlagsHelper
 
     post.flags.each do |flag|
       html << '<li>'
-      html << DText.parse_inline(flag.reason).html_safe
+      html << format_text(flag.reason, inline: true)
 
       if CurrentUser.can_view_flagger?(flag.creator_id)
         html << " - #{link_to_user(flag.creator)}"