[chore] remove codecov material (#7190)

.gitignore

@@ -16,8 +16,6 @@ node_modules
 /transition
 /animate
 /scratch/
-/coverage/
-/coverage.lcov
 /test/*/samples/_
 /yarn-error.log
 _actual*.*

package.json

@@ -86,10 +86,6 @@
     "test": "mocha --exit",
     "test:unit": "mocha --require sucrase/register --recursive src/**/__test__.ts --exit",
     "quicktest": "mocha",
-    "precoverage": "c8 mocha",
-    "coverage": "c8 report --reporter=text-lcov > coverage.lcov && c8 report --reporter=html",
-    "codecov": "codecov",
-    "precodecov": "npm run coverage",
     "build": "rollup -c && npm run tsd",
     "prepare": "npm run build",
     "dev": "rollup -cw",
@@ -131,9 +127,7 @@
     "@typescript-eslint/parser": "^4.31.2",
     "acorn": "^8.4.1",
     "agadoo": "^1.1.0",
-    "c8": "^5.0.1",
     "code-red": "^0.2.4",
-    "codecov": "^3.5.0",
     "css-tree": "^1.1.2",
     "eslint": "^7.32.0",
     "eslint-plugin-import": "^2.24.2",