cmd/go/internal/get: remove unused pkgImportPath

We can also remove the internal/load import as a result.

Found with honnef.co/go/tools/cmd/unused.

Change-Id: Ie70c5713e7a6f238158804acec07807c14f8e092
Reviewed-on: https://go-review.googlesource.com/41473Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

src/cmd/go/internal/get/pkg_test.go

@@ -5,7 +5,6 @@
 package get
 
 import (
-	"cmd/go/internal/load"
 	"cmd/go/internal/str"
 	"reflect"
 	"strings"
@@ -82,11 +81,3 @@ func TestParseMetaGoImports(t *testing.T) {
 		}
 	}
 }
-
-func pkgImportPath(path string) *load.Package {
-	return &load.Package{
-		PackagePublic: load.PackagePublic{
-			ImportPath: path,
-		},
-	}
-}