Remove CreateVariations, CreateLocalVariations and AddInterVariantDependencies

These have all been replaced by TransitionMutators.

Bug: 319288033
Flag: EXEMPT refactor
Test: all soong tests pass
Change-Id: Ib8f2a7419b879d69d8a1e0d2d4fadd89b082c064
diff --git a/cc/cc.go b/cc/cc.go
index 6e16142..b35c8d7 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -137,7 +137,7 @@
 
 	// LLNDK headers for the ABI checker to check LLNDK implementation library.
 	// An LLNDK implementation is the core variant. LLNDK header libs are reexported by the vendor variant.
-	// The core variant cannot depend on the vendor variant because of the order of CreateVariations.
+	// The core variant cannot depend on the vendor variant because of the order of imageTransitionMutator.Split().
 	// Instead, the LLNDK implementation depends on the LLNDK header libs.
 	LlndkHeaderLibs []string
 }