Remove unsued mutator registration

Bug: 179313531
Change-Id: Ide9fc0a9e1275bb6303c8a3114ce1c4e98915f75
Test: m nothing
diff --git a/android/mutator.go b/android/mutator.go
index 067d6c3..3ff9e61 100644
--- a/android/mutator.go
+++ b/android/mutator.go
@@ -698,12 +698,6 @@
 	ctx.BottomUp("deps", depsMutator).Parallel()
 }
 
-func registerDepsMutatorBp2Build(ctx RegisterMutatorsContext) {
-	// TODO(b/179313531): Consider a separate mutator that only runs depsMutator for modules that are
-	// being converted to build targets.
-	ctx.BottomUp("deps", depsMutator).Parallel()
-}
-
 func (t *bottomUpMutatorContext) CreateBazelTargetModule(
 	bazelProps bazel.BazelTargetModuleProperties,
 	commonAttrs CommonAttributes,