gopls: remove dead code

This change removes functions reported as unreachable by
internal/cmd/deadcode. Also, move the "generated" file
marker to the correct positions.

Change-Id: I56f3c056cd010914ac5d4e410f1ee4a44289cc77
Reviewed-on: https://go-review.googlesource.com/c/tools/+/524760
Run-TryBot: Alan Donovan <adonovan@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
Auto-Submit: Alan Donovan <adonovan@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>

Author: adonovan

gopls/internal/lsp/cmd/cmd.go

@@ -348,15 +348,6 @@ func (app *Application) connect(ctx context.Context, onProgress func(*protocol.P
 	}
 }
 
-// CloseTestConnections terminates shared connections used in command tests. It
-// should only be called from tests.
-func CloseTestConnections(ctx context.Context) {
-	for _, c := range internalConnections {
-		c.Shutdown(ctx)
-		c.Exit(ctx)
-	}
-}
-
 func (app *Application) connectRemote(ctx context.Context, remote string) (*connection, error) {
 	conn, err := lsprpc.ConnectToRemote(ctx, remote)
 	if err != nil {

gopls/internal/lsp/command/command_gen.go

@@ -1311,14 +1311,6 @@ func (e *SoftError) Error() string {
 	return e.msg
 }
 
-// softErrorf reports an error that does not affect the functionality of gopls
-// (a warning in the UI).
-// The formatted message will be shown to the user unmodified.
-func (r *OptionResult) softErrorf(format string, values ...interface{}) {
-	msg := fmt.Sprintf(format, values...)
-	r.Error = &SoftError{msg}
-}
-
 // deprecated reports the current setting as deprecated. If 'replacement' is
 // non-nil, it is suggested to the user.
 func (r *OptionResult) deprecated(replacement string) {

gopls/internal/lsp/command/gen/gen.go

@@ -1159,38 +1159,6 @@ func SpanName(spn span.Span) string {
 	return fmt.Sprintf("%v_%v_%v", uriName(spn.URI()), spn.Start().Line(), spn.Start().Column())
 }
 
-func CopyFolderToTempDir(folder string) (string, error) {
-	if _, err := os.Stat(folder); err != nil {
-		return "", err
-	}
-	dst, err := ioutil.TempDir("", "modfile_test")
-	if err != nil {
-		return "", err
-	}
-	fds, err := ioutil.ReadDir(folder)
-	if err != nil {
-		return "", err
-	}
-	for _, fd := range fds {
-		srcfp := filepath.Join(folder, fd.Name())
-		stat, err := os.Stat(srcfp)
-		if err != nil {
-			return "", err
-		}
-		if !stat.Mode().IsRegular() {
-			return "", fmt.Errorf("cannot copy non regular file %s", srcfp)
-		}
-		contents, err := ioutil.ReadFile(srcfp)
-		if err != nil {
-			return "", err
-		}
-		if err := ioutil.WriteFile(filepath.Join(dst, fd.Name()), contents, stat.Mode()); err != nil {
-			return "", err
-		}
-	}
-	return dst, nil
-}
-
 func shouldSkip(data *Data, uri span.URI) bool {
 	if data.ModfileFlagAvailable {
 		return false