Remove unapproved ciphers TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256

[zhengxiexie]

nsx-ncp uses 9981 port which supports the following ciphers:

 Port 9981
  Version: TLSv1.2
   TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
   TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
   TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA

TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 is not approved by BC

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.

Project coverage is 73.35%. Comparing base (a1693cd) to head (03d2ea8).

Files with missing lines	Patch %	Lines
cmd/main.go	0.00%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #972      +/-   ##
==========================================
- Coverage   73.37%   73.35%   -0.02%     
==========================================
  Files         118      118              
  Lines       16394    16398       +4     
==========================================
  Hits        12029    12029              
- Misses       3581     3585       +4     
  Partials      784      784              

Flag	Coverage Δ
unit-tests	73.35% <0.00%> (-0.02%)	⬇️

Files with missing lines	Coverage Δ
cmd/main.go	0.00% <0.00%> (ø)