Revert the web report function from depcheck

[lijunle]

• It is going to create a separated package for depcheck web report.
• The output JSON will be used to deliver depcheck result.

[codecov-io]

Current coverage is 99.27%

Merging #68 into master will increase coverage by +1.66% as of 8455c4e

@@            master     #68   diff @@
======================================
  Files           12      11     -1
  Stmts          294     274    -20
  Branches         0       0       
  Methods          0       0       
======================================
- Hit            287     272    -15
  Partial          0       0       
+ Missed           7       2     -5

Review entire Coverage Diff as of 8455c4e

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