internal/fetch: delete goPackage.documentationHTML

The goPackage.documentationHTML is no longer being used.

Change-Id: Ie064c2a5b8bac9adc9b1c56a3ecb74596be6d159
Reviewed-on: https://go-review.googlesource.com/c/pkgsite/+/274249
Reviewed-by: Jonathan Amsterdam <jba@google.com>
Trust: Julie Qiu <julie@golang.org>
diff --git a/internal/fetch/load.go b/internal/fetch/load.go
index 8bcd4ec..9fcce8c 100644
--- a/internal/fetch/load.go
+++ b/internal/fetch/load.go
@@ -123,7 +123,7 @@
 		return nil, err
 	}
 
-	synopsis, imports, docHTML, err := docPkg.Render(ctx, innerPath, sourceInfo, modInfo, goos, goarch)
+	synopsis, imports, _, err := docPkg.Render(ctx, innerPath, sourceInfo, modInfo, goos, goarch)
 	if err != nil && !errors.Is(err, godoc.ErrTooLarge) {
 		return nil, err
 	}
@@ -133,15 +133,14 @@
 	}
 	v1path := internal.V1Path(importPath, modulePath)
 	return &goPackage{
-		path:              importPath,
-		name:              packageName,
-		synopsis:          synopsis,
-		v1path:            v1path,
-		imports:           imports,
-		documentationHTML: docHTML,
-		goos:              goos,
-		goarch:            goarch,
-		source:            src,
+		path:     importPath,
+		name:     packageName,
+		synopsis: synopsis,
+		v1path:   v1path,
+		imports:  imports,
+		goos:     goos,
+		goarch:   goarch,
+		source:   src,
 	}, err
 }
 
diff --git a/internal/fetch/package.go b/internal/fetch/package.go
index 6645c10..3aa1240 100644
--- a/internal/fetch/package.go
+++ b/internal/fetch/package.go
@@ -15,7 +15,6 @@
 	"runtime/debug"
 	"strings"
 
-	"github.com/google/safehtml"
 	"go.opencensus.io/trace"
 	"golang.org/x/mod/module"
 	"golang.org/x/pkgsite/internal"
@@ -33,7 +32,6 @@
 	name              string
 	synopsis          string
 	imports           []string
-	documentationHTML safehtml.HTML
 	isRedistributable bool
 	licenseMeta       []*licenses.Metadata // metadata of applicable licenses
 	// goos and goarch are environment variables used to parse the
diff --git a/internal/fetch/unit_test.go b/internal/fetch/unit_test.go
index 7102ef0..b14f862 100644
--- a/internal/fetch/unit_test.go
+++ b/internal/fetch/unit_test.go
@@ -88,7 +88,6 @@
 		synopsis:          sample.Synopsis,
 		isRedistributable: true,
 		licenseMeta:       sample.LicenseMetadata,
-		documentationHTML: sample.DocumentationHTML,
 		imports:           sample.Imports,
 		goos:              sample.GOOS,
 		goarch:            sample.GOARCH,