87a92452ef143543a6ba7cee6d9d84a2211140b1 seems to be a mistake, rimraf should be removed

[KTibow]

87a9245 confuses me. I don't see rimraf actually being used anywhere in packages/tools (the only place it's used is during development, see #838); in fact it was explicitly removed in googleapis/gax-nodejs#1626. Why was it added back?

[miguelvelezsa]

Fixed in #852