build: remove obsolete publish snapshots check (#14638)
build: remove obsolete publish snapshots check (#14638)

* Since we now have proper branch filters for all CircleCI jobs, the logic that determines whether the "publish_snapshots" job should run, can be removed safely.
Jefiozie/material2,DevVersion/material2,josephperrott/material2,andrewseguin/material2,crisbeto/material2,Jefiozie/material2,crisbeto/material2,andrewseguin/material2,andrewseguin/material2,DevVersion/material2,josephperrott/material2,jelbourn/material2,mmalerba/material2,DevVersion/material2,mmalerba/material2,mmalerba/material2,andrewseguin/material2,mmalerba/material2,jelbourn/material2,jelbourn/material2,Jefiozie/material2,josephperrott/material2,angular/components,angular/components,angular/components,angular/components,andrewseguin/material2,DevVersion/material2,crisbeto/material2,DevVersion/material2,Jefiozie/material2,josephperrott/material2,josephperrott/material2,jelbourn/material2,Jefiozie/material2,crisbeto/material2,jelbourn/material2,mmalerba/material2