cmd/go/internal/modload: remove a stale comment for EditBuildList

For #36460
Updates #37438

Change-Id: I1626d40e78b110035a893b1b80dbd2279bf50ffe
Reviewed-on: https://go-review.googlesource.com/c/go/+/272128
Trust: Bryan C. Mills <[email protected]>
Run-TryBot: Bryan C. Mills <[email protected]>
TryBot-Result: Go Bot <[email protected]>
Reviewed-by: Jay Conrod <[email protected]>

Author: Bryan C. Mills

src/cmd/go/internal/modload/buildlist.go

@@ -73,9 +73,6 @@ func Selected(path string) (version string) {
 // build list: they could be lower than existing requirements or conflict with
 // versions in mustSelect.)
 //
-// After performing the requested edits, EditBuildList returns the updated build
-// list.
-//
 // If the versions listed in mustSelect are mutually incompatible (due to one of
 // the listed modules requiring a higher version of another), EditBuildList
 // returns a *ConstraintError and leaves the build list in its previous state.