Remove RELEASE_USE_RESOURCE_PROCESSOR_BY_DEFAULT

RELEASE_USE_RESOURCE_PROCESSOR_BY_DEFAULT is set to true in all
release configs in main, Soong can stop checking the value.

Bug: 383853591
Test: builds
Change-Id: I3f1879b2fcf265a39371767be939e57f41788bd7
diff --git a/java/aar.go b/java/aar.go
index f7c5c13..9779d7c 100644
--- a/java/aar.go
+++ b/java/aar.go
@@ -217,7 +217,7 @@
 }
 
 func (a *aapt) useResourceProcessorBusyBox(ctx android.BaseModuleContext) bool {
-	return BoolDefault(a.aaptProperties.Use_resource_processor, ctx.Config().UseResourceProcessorByDefault()) &&
+	return BoolDefault(a.aaptProperties.Use_resource_processor, true) &&
 		// TODO(b/331641946): remove this when ResourceProcessorBusyBox supports generating shared libraries.
 		!slices.Contains(a.aaptProperties.Aaptflags, "--shared-lib") &&
 		// Use the legacy resource processor in kythe builds.