internal/profile: remove unused encodeStringOpt
internal/profile: remove unused encodeStringOpt

Change-Id: Icaee8064c5ab61cc2ad28c2d1d06d70f845754fa
Reviewed-on: https://go-review.googlesource.com/c/go/+/451535
Reviewed-by: Joedian Reid <454f26308bdf67a957daa60c4ad294a9b7c3fcbc@golang.org>
Reviewed-by: Cherry Mui <d62e63aa42ce272d7b6a5055d97e942b33a34679@google.com>
TryBot-Result: Gopher Robot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>
Run-TryBot: Tobias Klauser <0a68dd4915066ec5d3f81f75a828fee53dcc8822@gmail.com>

golang/go,golang/go,golang/go,golang/go,golang/go,golang/go,golang/go,golang/go