* Remove use of ethgassthat; use metaswap /gasPrices api for gas price estimates
* Remove references to ethgasstation
* Pass base to BigNumber constructor in fetchExternalBasicGasEstimates
* Update ui/app/hooks/useTokenTracker.js
Co-authored-by: Erik Marks <25517051+rekmarks@users.noreply.github.com>
* Delete gas price chart
* Remove price chart css import
* Delete additional fee chart code
* Lint fix
* Delete more code no longer used after ethgasstation removal
Co-authored-by: Erik Marks <25517051+rekmarks@users.noreply.github.com>