Fetch FxA metrics for non-FF browsers on /accounts (Fixes #7269) (#7271)
Fetch FxA metrics for non-FF browsers on /accounts (Fixes #7269) (#7271)

* Fetch FxA metrics for non-FF browsers on /accounts (Fixes #7269)
* Use removeChild() instead of remove()

ericawright/bedrock,mozilla/bedrock,pascalchevrel/bedrock,alexgibson/bedrock,flodolo/bedrock,sgarrity/bedrock,flodolo/bedrock,pascalchevrel/bedrock,sylvestre/bedrock,sgarrity/bedrock,sylvestre/bedrock,MichaelKohler/bedrock,ericawright/bedrock,hoosteeno/bedrock,hoosteeno/bedrock,mozilla/bedrock,ericawright/bedrock,alexgibson/bedrock,mozilla/bedrock,craigcook/bedrock,craigcook/bedrock,pascalchevrel/bedrock,sgarrity/bedrock,MichaelKohler/bedrock,alexgibson/bedrock,MichaelKohler/bedrock,craigcook/bedrock,craigcook/bedrock,sylvestre/bedrock,MichaelKohler/bedrock,flodolo/bedrock,alexgibson/bedrock,sgarrity/bedrock,flodolo/bedrock,pascalchevrel/bedrock,sylvestre/bedrock,hoosteeno/bedrock,ericawright/bedrock,mozilla/bedrock,hoosteeno/bedrock