engine removed

[ucwong]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 47.24%. Comparing base (69614dc) to head (28dd7cf).
Report is 14 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1932      +/-   ##
==========================================
+ Coverage   47.18%   47.24%   +0.05%     
==========================================
  Files         568      568              
  Lines       68825    68824       -1     
==========================================
+ Hits        32478    32517      +39     
+ Misses      33824    33783      -41     
- Partials     2523     2524       +1     

Files	Coverage Δ
ctxc/backend.go	0.00% <ø> (ø)
ctxc/handler.go	26.60% <0.00%> (ø)

... and 15 files with indirect coverage changes