embed: simplify the code
Use stringslite and bytealg to simplify the code and to remove redundent
helper functions.
Change-Id: I665a8313d9b91201b147b255290058f162cf0894
GitHub-Last-Rev:
e9e3bebdb477c301ec96e2b7425c20e6792d9765
GitHub-Pull-Request: golang/go#67515
Reviewed-on: https://go-review.googlesource.com/c/go/+/586715
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>