slices: refactor DeleteFunc to improve code readability
Reuse IndexFunc function to avoid confusing subscript indexing, and to reduce code nesting depth.
Change-Id: I309416ebf928071f71054433e078f0fda802fba8
GitHub-Last-Rev:
af54738bda7f27afda5f92496363c0a68493c369
GitHub-Pull-Request: golang/go#61154
Reviewed-on: https://go-review.googlesource.com/c/go/+/507635
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>