go/types, types2: remove unused argument from Checker.updateExprType0
With Checker.updateExprType0 and Checker.updateExprType being the
same now, rename updateExprType0 to updateExprType and remove the
old updateExprType.
Change-Id: Ib5c3d74e7fac9cedcc87ad521b7543b8d7f83943
Reviewed-on: https://go-review.googlesource.com/c/go/+/611276 Reviewed-by: Tim King <taking@google.com> Reviewed-by: Robert Griesemer <gri@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Robert Griesemer <gri@google.com>