gopls/internal/golang: ignoredError inlay hint: skip io.WriteString

Change-Id: I43b0eefe5e0345c3c7b4dcda889d73baab16cbbb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/693035
Auto-Submit: Alan Donovan <adonovan@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

Author: adonovan

gopls/internal/golang/inlay_hint.go

@@ -165,7 +165,8 @@ outer:
 		obj := typeutil.Callee(info, call)
 		if analysisinternal.IsFunctionNamed(obj, "fmt", "Print", "Printf", "Println", "Fprint", "Fprintf", "Fprintln") ||
 			analysisinternal.IsMethodNamed(obj, "bytes", "Buffer", "Write", "WriteByte", "WriteRune", "WriteString") ||
-			analysisinternal.IsMethodNamed(obj, "strings", "Builder", "Write", "WriteByte", "WriteRune", "WriteString") {
+			analysisinternal.IsMethodNamed(obj, "strings", "Builder", "Write", "WriteByte", "WriteRune", "WriteString") ||
+			analysisinternal.IsFunctionNamed(obj, "io", "WriteString") {
 			continue
 		}