Remove blueprint.Module helper functions

Now that blueprint_go_binary modules are wrapped in a module type
that implements android.Module Soong should never see a blueprint.Module.
Remove the versions of the context methods that allow working with
blueprint.Modules.

Genrules still need VisitDirectDepsAllowDisabled, as they use a hack
that adds dependencies on host tools after the prebuilts mutators have
run, which means they may have a dependency on a disabled prebuilt
and need to manually forward it to the corresponding source module.

Test: all soong tests pass
Flag: EXEMPT refactor
Change-Id: I9147b450269749326e8fe75c5af310bd2d898d8c
diff --git a/android/paths.go b/android/paths.go
index 0d94f03..1c8258e 100644
--- a/android/paths.go
+++ b/android/paths.go
@@ -92,7 +92,7 @@
 type ModuleWithDepsPathContext interface {
 	EarlyModulePathContext
 	OtherModuleProviderContext
-	VisitDirectDepsBlueprint(visit func(blueprint.Module))
+	VisitDirectDeps(visit func(Module))
 	OtherModuleDependencyTag(m blueprint.Module) blueprint.DependencyTag
 	HasMutatorFinished(mutatorName string) bool
 }
@@ -598,7 +598,7 @@
 	// create the tag here as was supplied to create the tag when the dependency was added so that
 	// this finds the matching dependency module.
 	expectedTag := sourceOrOutputDepTag(moduleName, tag)
-	ctx.VisitDirectDepsBlueprint(func(module blueprint.Module) {
+	ctx.VisitDirectDeps(func(module Module) {
 		depTag := ctx.OtherModuleDependencyTag(module)
 		if depTag == expectedTag {
 			found = module