Fix: reply remove at

[yanyongyu]

fix #108

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 66.96%. Comparing base (5c38f75) to head (001f3f5).

Files	Patch %	Lines
nonebot/adapters/onebot/v11/bot.py	0.00%	1 Missing ⚠️
nonebot/adapters/onebot/v12/bot.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #109   +/-   ##
=======================================
  Coverage   66.96%   66.96%           
=======================================
  Files          24       24           
  Lines        2155     2155           
=======================================
  Hits         1443     1443           
  Misses        712      712           

Flag	Coverage Δ
unittests	66.96% <0.00%> (ø)

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[github-actions]

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