internal/lsp: remove useless check

err must be nil, as the code checks in line 117.

Change-Id: I23d87bdc9489c9ed249bfa1ac61b1ed722121c6a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217402
Run-TryBot: Peter Weinberger <[email protected]>
TryBot-Result: Gobot Gobot <[email protected]>
Reviewed-by: Rebecca Stambler <[email protected]>

Author: pjweinbgo

internal/lsp/cmd/definition.go

@@ -134,9 +134,6 @@ func (d *definition) Run(ctx context.Context, args ...string) error {
 	default:
 		return errors.Errorf("unknown emulation for definition: %s", d.query.Emulate)
 	}
-	if err != nil {
-		return err
-	}
 	if d.query.JSON {
 		enc := json.NewEncoder(os.Stdout)
 		enc.SetIndent("", "\t")