Use lighthouse 3.0.1 (#269)

* Use lighthouse 3.0.1

* Remove more

Author: jarrodmillman

netlify.toml

@@ -4,18 +4,3 @@
 
 [[plugins]]
   package = "netlify-plugin-checklinks"
-
-[[plugins]]
-  package = "@netlify/plugin-lighthouse"
-
-  # optional, fails build when a category is below a threshold
-  [plugins.inputs.thresholds]
-    performance = 0.75
-    accessibility = 0.95
-    best-practices = 0.95
-    seo = 0.95
-    pwa = 0.2
-
-  # optional, deploy the lighthouse report to a path under your site
-  [plugins.inputs]
-    output_path = "reports/lighthouse.html"