cmd/go/internal/modload: remove ImportMap and PackageDir

These two functions together duplicated much of the functionality of
modload.Lookup. Use that instead in modcmd.vendorPkg, and reduce the
modload surface area.

Updates #42504
Updates #40775
For #26904

Change-Id: Ib8aaac495d090178dd56971aef9e5aa44ffa818b
Reviewed-on: https://go-review.googlesource.com/c/go/+/332571
Reviewed-by: Michael Matloob <matloob@golang.org>
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
Auto-Submit: Bryan Mills <bcmills@google.com>

1 files changed, 0 insertions, 22 deletions

diff --git a/src/cmd/go/internal/modload/load.go b/src/cmd/go/internal/modload/load.go
index a36ac9c5bb..7e061f01a4 100644
--- a/src/cmd/go/internal/modload/load.go
+++ b/src/cmd/go/internal/modload/load.go
@@ -767,28 +767,6 @@ func (mms *MainModuleSet) DirImportPath(ctx context.Context, dir string) (path s
 	return ".", module.Version{}
 }
 
-// ImportMap returns the actual package import path
-// for an import path found in source code.
-// If the given import path does not appear in the source code
-// for the packages that have been loaded, ImportMap returns the empty string.
-func ImportMap(path string) string {
-	pkg, ok := loaded.pkgCache.Get(path).(*loadPkg)
-	if !ok {
-		return ""
-	}
-	return pkg.path
-}
-
-// PackageDir returns the directory containing the source code
-// for the package named by the import path.
-func PackageDir(path string) string {
-	pkg, ok := loaded.pkgCache.Get(path).(*loadPkg)
-	if !ok {
-		return ""
-	}
-	return pkg.dir
-}
-
 // PackageModule returns the module providing the package named by the import path.
 func PackageModule(path string) module.Version {
 	pkg, ok := loaded.pkgCache.Get(path).(*loadPkg)