Revert "bext: add firstSourcegraphUrl to logs (#32719)"
Created by: taras-yemets
This reverts commit 07b84091f1d567c58609bf82520da47a91fe110c. Reverts https://github.com/sourcegraph/sourcegraph/pull/32719
Test plan
Ensure firstSourcegraphURL
value is not added to browser extension logs.