cmd/go: remove unused code

Change-Id: I39e8533a646d171a84c1ef307915286213006543
GitHub-Last-Rev: 3c21684
GitHub-Pull-Request: #67090
Reviewed-on: https://go-review.googlesource.com/c/go/+/581938
Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Cherry Mui <cherryyz@google.com>

src/cmd/go/internal/load/pkg.go

@@ -604,51 +604,6 @@ func (sp *ImportStack) shorterThan(t []string) bool {
 // we return the same pointer each time.
 var packageCache = map[string]*Package{}
 
-// ClearPackageCache clears the in-memory package cache and the preload caches.
-// It is only for use by GOPATH-based "go get".
-// TODO(jayconrod): When GOPATH-based "go get" is removed, delete this function.
-func ClearPackageCache() {
-	clear(packageCache)
-	resolvedImportCache.Clear()
-	packageDataCache.Clear()
-}
-
-// ClearPackageCachePartial clears packages with the given import paths from the
-// in-memory package cache and the preload caches. It is only for use by
-// GOPATH-based "go get".
-// TODO(jayconrod): When GOPATH-based "go get" is removed, delete this function.
-func ClearPackageCachePartial(args []string) {
-	shouldDelete := make(map[string]bool)
-	for _, arg := range args {
-		shouldDelete[arg] = true
-		if p := packageCache[arg]; p != nil {
-			delete(packageCache, arg)
-		}
-	}
-	resolvedImportCache.DeleteIf(func(key importSpec) bool {
-		return shouldDelete[key.path]
-	})
-	packageDataCache.DeleteIf(func(key string) bool {
-		return shouldDelete[key]
-	})
-}
-
-// ReloadPackageNoFlags is like LoadImport but makes sure
-// not to use the package cache.
-// It is only for use by GOPATH-based "go get".
-// TODO(rsc): When GOPATH-based "go get" is removed, delete this function.
-func ReloadPackageNoFlags(arg string, stk *ImportStack) *Package {
-	p := packageCache[arg]
-	if p != nil {
-		delete(packageCache, arg)
-		resolvedImportCache.DeleteIf(func(key importSpec) bool {
-			return key.path == p.ImportPath
-		})
-		packageDataCache.Delete(p.ImportPath)
-	}
-	return LoadPackage(context.TODO(), PackageOpts{}, arg, base.Cwd(), stk, nil, 0)
-}
-
 // dirToImportPath returns the pseudo-import path we use for a package
 // outside the Go path. It begins with _/ and then contains the full path
 // to the directory. If the package lives in c:\home\gopher\my\pkg then

src/cmd/go/internal/par/work.go

@@ -180,41 +180,3 @@ func (c *Cache[K, V]) Get(key K) (V, bool) {
 	}
 	return e.result, true
 }
-
-// Clear removes all entries in the cache.
-//
-// Concurrent calls to Get may return old values. Concurrent calls to Do
-// may return old values or store results in entries that have been deleted.
-//
-// TODO(jayconrod): Delete this after the package cache clearing functions
-// in internal/load have been removed.
-func (c *Cache[K, V]) Clear() {
-	c.m.Clear()
-}
-
-// Delete removes an entry from the map. It is safe to call Delete for an
-// entry that does not exist. Delete will return quickly, even if the result
-// for a key is still being computed; the computation will finish, but the
-// result won't be accessible through the cache.
-//
-// TODO(jayconrod): Delete this after the package cache clearing functions
-// in internal/load have been removed.
-func (c *Cache[K, V]) Delete(key K) {
-	c.m.Delete(key)
-}
-
-// DeleteIf calls pred for each key in the map. If pred returns true for a key,
-// DeleteIf removes the corresponding entry. If the result for a key is
-// still being computed, DeleteIf will remove the entry without waiting for
-// the computation to finish. The result won't be accessible through the cache.
-//
-// TODO(jayconrod): Delete this after the package cache clearing functions
-// in internal/load have been removed.
-func (c *Cache[K, V]) DeleteIf(pred func(key K) bool) {
-	c.m.Range(func(key, _ any) bool {
-		if key := key.(K); pred(key) {
-			c.Delete(key)
-		}
-		return true
-	})
-}