svm: remove SubstrateArraysCopyOfSnippets

The SubstrateVM specific intrinsic for Arrays.copyOf is no longer needed
as we can now deal with the graphs the compiler produces. There is no more
good reason to keep maintaining this code.

substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/graal/jdk/JDKIntrinsicsFeature.java

@@ -54,7 +54,6 @@ final class JDKIntrinsicsFeature implements GraalFeature {
     public void registerForeignCalls(RuntimeConfiguration runtimeConfig, Providers providers, SnippetReflectionProvider snippetReflection, SubstrateForeignCallsProvider foreignCalls, boolean hosted) {
         ArraycopySnippets.registerForeignCalls(providers, foreignCalls);
         SubstrateObjectCloneSnippets.registerForeignCalls(providers, foreignCalls);
-        SubstrateArraysCopyOfSnippets.registerForeignCalls(providers, foreignCalls);
     }
 
     @Override
@@ -64,7 +63,6 @@ public void registerLowerings(RuntimeConfiguration runtimeConfig, OptionValues o
                     Map<Class<? extends Node>, NodeLoweringProvider<?>> lowerings, boolean hosted) {
         new ArraycopySnippets(options, factories, providers, snippetReflection, lowerings);
         SubstrateObjectCloneSnippets.registerLowerings(options, factories, providers, snippetReflection, lowerings);
-        SubstrateArraysCopyOfSnippets.registerLowerings(options, factories, providers, snippetReflection, lowerings);
     }
 
     @Override