Revert "cmd/go: note when some Go files were ignored on no-Go-files errors"
This reverts commit
eee727d0855b9e78f9df87e08d57b1d7f264876c
(https://golang.org/cl/29113)
The " (.go files ignored due to build tags)" error message is not
always accurate.
Fixes #18396
Updates #17008
Change-Id: I609653120603a7f6094bc1dc3a83856f4b259241
Reviewed-on: https://go-review.googlesource.com/34662
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>