removing guardrails from Auto(*)

[angela97lin]

removing guardrails from Auto(*)

closes #201

[codecov]

Codecov Report

Merging #202 into master will increase coverage by 0.04%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #202      +/-   ##
==========================================
+ Coverage   96.69%   96.73%   +0.04%     
==========================================
  Files          91       91              
  Lines        2328     2298      -30     
==========================================
- Hits         2251     2223      -28     
+ Misses         77       75       -2

Impacted Files	Coverage Δ
evalml/models/auto_base.py	93.77% <ø> (+0.41%)	⬆️
evalml/models/auto_regressor.py	90.9% <ø> (ø)	⬆️
evalml/tests/automl_tests/test_autoclassifier.py	100% <ø> (ø)	⬆️
evalml/models/auto_classifier.py	100% <ø> (ø)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 71cd00d...19ef412. Read the comment docs.

[angela97lin]

Note: not sure if we should remove label leakage as well, since it's a guardrail but was implemented before.

[kmax12]

LGTM