chore(deps): remove some unused devDeps

[ryanseddon]

Description

🏡 Some house cleaning of unused dev dependencies:

• react-svg-inline
• inline-svg-react

Packages potentially unused but still not sure what there purpose might be:

• regenerator-runtime
• html-webpack-plugin

I used a combination of npx npm-check -d | grep NOTUSED and:

grep \
  --exclude-dir=.template \
  --exclude-dir=node_modules \
  --include=\*.js \
  --include=\*.json \
  --include=\*.sh \
  --exclude=\package.json \
  --exclude=\package-lock.json \
  --exclude=\*.spec.js \
  -rnw './' \
  -e ‘[package-name]’

To search if a package is used npm-check doesn't quite search as extensively as the above command but gives us an idea of what might not be used.

[coveralls]

Coverage remained the same at 94.797% when pulling a377565 on ryan/remove_unused_dev_deps into c2563cf on master.