chore: Minor API cleanups (#3645)

- exception list updated
- revert mail presenter changes

spec/mailboxes/reply_mailbox_spec.rb

@@ -96,35 +96,5 @@ RSpec.describe ReplyMailbox, type: :mailbox do
         expect(conversation_1.messages.last.content).to eq("Let's talk about these images:")
       end
     end
-
-    context 'with quotes in email' do
-      let(:described_subject) { described_class.receive mail_with_quote }
-
-      before do
-        # this UUID is hardcoded in the reply.eml, that's why we are updating this
-        conversation.uuid = '6bdc3f4d-0bec-4515-a284-5d916fdde489'
-        conversation.save
-      end
-
-      it 'add the mail content as new message on the conversation' do
-        described_subject
-        expect(conversation.messages.last.content).to eq(
-          <<-BODY.strip_heredoc.chomp
-            Yes, I am providing you step how to reproduce this issue
-
-            On Thu, Aug 19, 2021 at 2:07 PM Tejaswini from Email sender test < tejaswini@chatwoot.com> wrote:
-
-            > Any update on this?
-            >
-            >
-
-            --
-            * Sony Mathew*
-            Software developer
-            *Mob:9999999999
-          BODY
-        )
-      end
-    end
   end
 end