[gndoc] Remove no-op -S flag

Bug: 119650
Change-Id: If0e390fe3d0364093d2172b0df1aba98225e02f1
Reviewed-on: https://fuchsia-review.googlesource.com/c/tools/+/791163
Commit-Queue: Auto-Submit <auto-submit@fuchsia-infra.iam.gserviceaccount.com>
Fuchsia-Auto-Submit: Anthony Fandrianto <atyfto@google.com>
Reviewed-by: Catherine Duncan <catduncan@google.com>
diff --git a/gndoc/cmd/main.go b/gndoc/cmd/main.go
index cc750cb..0e500e8 100644
--- a/gndoc/cmd/main.go
+++ b/gndoc/cmd/main.go
@@ -38,7 +38,6 @@
 	flag.Var(&keyArgs, "key", "a label for output")
 	flag.Var(&inputFiles, "in", "path to an input file")
 	flag.StringVar(&outFile, "out", "", "path to output file (default stdout)")
-	flag.StringVar(&sourcesFile, "s", "", "path to json file generated by Jiri projects")
 }
 
 func main() {
@@ -47,13 +46,6 @@
 		flag.PrintDefaults()
 	}
 
-	// sources is no longer used since the URL generated for remotes is can be wrong
-	// due to the path within the Fuchsia tree not matching the path from the root
-	// of the remote project.
-	// Also, it appears some BUILD.gn files in third_party are being generated from Bazel
-	// builds, so the link is not accurate.
-	//
-	// TODO(fxb/119650): Remove sourcemap all together.
 	ctx := context.Background()
 	argMap := gndoc.NewArgMap()