Remove graphs.py and remove separate plotting section from API reference

[jeremyliweishih]

Fixes #549.

[codecov]

Codecov Report

Merging #657 into master will decrease coverage by 0.36%.
The diff coverage is 95.74%.

@@            Coverage Diff             @@
##           master     #657      +/-   ##
==========================================
- Coverage   98.97%   98.61%   -0.37%     
==========================================
  Files         136      135       -1     
  Lines        4697     4691       -6     
==========================================
- Hits         4649     4626      -23     
- Misses         48       65      +17     

Impacted Files	Coverage Δ
evalml/pipelines/pipeline_base.py	97.66% <95.74%> (-0.60%)	⬇️
evalml/tests/utils_tests/test_dependencies.py	87.50% <0.00%> (-12.50%)	⬇️
evalml/tests/component_tests/test_utils.py	92.85% <0.00%> (-3.58%)	⬇️
.../tests/automl_tests/test_auto_regression_search.py	97.93% <0.00%> (-2.07%)	⬇️
evalml/tests/pipeline_tests/test_pipelines.py	97.87% <0.00%> (-1.77%)	⬇️
evalml/tests/component_tests/test_components.py	98.75% <0.00%> (-1.25%)	⬇️
evalml/automl/auto_base.py	95.37% <0.00%> (-1.00%)	⬇️
...ts/automl_tests/test_auto_classification_search.py	99.32% <0.00%> (-0.68%)	⬇️

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[dsherry]

@jeremyliweishih connect this PR with #549?

[dsherry]

Awesome

[dsherry]

Yep, looks good!

[dsherry]

Hey @jeremyliweishih I was about to comment: I just noticed the codecov was red. I bet it was just this exception handling that we don't have a mocking test for yet. You think you could get another PR up to add that?

[jeremyliweishih]

@dsherry sure - I merged cause I didn't change any functionality and the codecov should be the exact same.

[dsherry]

@jeremyliweishih awesome, thanks, ood to have that coverage in place. Yeah, I guess the coverage threshold in the old file must've been high enough and moving it somehow slipped things.

[jeremyliweishih]

Actually not too sure what to even add in - everything red on codecov is unrelated to this PR

https://codecov.io/gh/FeatureLabs/evalml/compare/6e5553bd6d462b9dafade8e8e57256e1d100530f...42e038e3bba4baf0645ee7b0c3093a3f15d4bce4/changes

[dsherry]

@jeremyliweishih yeah, the coverage change isn't the result of a problem with this PR. I think its simply that since you moved existing code into pipeline_base.py, that lowered overall coverage for that file. Specifically, here.

[jeremyliweishih]

@dsherry got it makes sense!