Remove PlatformVndkVersion property

Platform VNDK version is no longer available based on VNDK deprecation.
Remove all code using Platform VNDK version.

Bug: 330100430
Test: AOSP CF build succeeded
Change-Id: I7d0f7e23eff5d153346890f242a94b78bad6736b
diff --git a/cc/snapshot_prebuilt.go b/cc/snapshot_prebuilt.go
index e769fe9..7d003a9 100644
--- a/cc/snapshot_prebuilt.go
+++ b/cc/snapshot_prebuilt.go
@@ -324,7 +324,7 @@
 
 	variations = append(ctx.Target().Variations(), blueprint.Variation{
 		Mutator:   "image",
-		Variation: ProductVariationPrefix + ctx.DeviceConfig().PlatformVndkVersion()})
+		Variation: ProductVariation})
 
 	if ctx.OtherModuleFarDependencyVariantExists(variations, ctx.Module().(LinkableInterface).BaseModuleName()) {
 		p.baseProperties.Androidmk_suffix = p.Image.moduleNameSuffix()