Revert nhooyr.io/websocket

[adshao]

due to issue #321 , and nhooyr.io/websocket is not active for maintain.

revert pr #290.

Signed-off-by: adshao tjusgj@gmail.com

[codecov]

Codecov Report

Merging #357 (55c23a3) into master (5c415dd) will decrease coverage by 0.10%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #357      +/-   ##
==========================================
- Coverage   72.49%   72.38%   -0.11%     
==========================================
  Files          63       63              
  Lines        5927     5936       +9     
==========================================
  Hits         4297     4297              
- Misses       1205     1214       +9     
  Partials      425      425              

Impacted Files	Coverage Δ
v2/delivery/websocket.go	6.38% <0.00%> (-0.44%)	⬇️
v2/futures/websocket.go	6.38% <0.00%> (-0.44%)	⬇️
v2/websocket.go	6.38% <0.00%> (-0.44%)	⬇️

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