title: payload.member returns none on on_raw_reaction_remove() but works with on_raw_reaction_add()
body: <p>so im making a discord bot and I have an error:</p>
  <blockquote>
  <p>Ignoring exception in on_raw_reaction_remove
  Traceback (most recent call last):
  File &quot;/opt/virtualenvs/python3/lib/python3.8/site-packages/discord/client.py&quot;, line 343, in _run_event
  await coro(*args, **kwargs)
  File &quot;main.py&quot;, line 41, in on_raw_reaction_remove
  await payload.member.remove_roles(role)
  AttributeError: 'NoneType' object has no attribute 'remove_roles'</p>
  </blockquote>
  <p>on_raw_reaction_remove() code:</p>
  <pre><code>@client.event
  async def on_raw_reaction_remove(payload):
    if payload.message_id == 865402961585111111:
      if str(payload.emoji) == &quot;✅&quot;:
        guild = client.get_guild(payload.guild_id)
        role = discord.utils.get(guild.roles, name='Announcements')
        await payload.member.remove_roles(role)
  </code></pre>
  <p>on_raw_reaction_add() code:</p>
  <pre><code>@client.event
  async def on_raw_reaction_add(payload):
    if payload.message_id == 865402961585111111:
      if str(payload.emoji) == &quot;✅&quot;:
        guild = client.get_guild(payload.guild_id)
        role = discord.utils.get(guild.roles, name='Announcements')
        await payload.member.add_roles(role)
  </code></pre>
  <p>The strange thing is, with on_raw_reaction_add() it returns a valid user.</p>