Remove unused loop node factory service provider lookup.

Author: chumer

substratevm/src/com.oracle.svm.truffle/src/com/oracle/svm/truffle/api/SubstrateTruffleRuntime.java

@@ -128,8 +128,6 @@ public final class SubstrateTruffleRuntime extends OptimizedTruffleRuntime {
     @Platforms(Platform.HOSTED_ONLY.class)
     public SubstrateTruffleRuntime() {
         super(new SubstrateTruffleCompilationSupport(), List.of());
-        /* Ensure the factory class gets initialized. */
-        super.getLoopNodeFactory();
     }
 
     @Override

truffle/mx.truffle/suite.py

@@ -1731,7 +1731,6 @@
         ],
         "uses" : [
           "com.oracle.truffle.api.impl.TruffleLocator",
-          "com.oracle.truffle.runtime.LoopNodeFactory",
           "com.oracle.truffle.runtime.TruffleTypes",
           "com.oracle.truffle.runtime.EngineCacheSupport",
           "com.oracle.truffle.runtime.jfr.EventFactory.Provider",

truffle/src/com.oracle.truffle.runtime/src/META-INF/services/com.oracle.truffle.runtime.LoopNodeFactory

@@ -193,7 +193,6 @@ public static OptimizedTruffleRuntime getRuntime() {
         return (OptimizedTruffleRuntime) Truffle.getRuntime();
     }
 
-    private final LoopNodeFactory loopNodeFactory;
     private EngineCacheSupport engineCacheSupport;
     private final Iterable<Class<?>> extraLookupTypes;
     private UnmodifiableEconomicMap<String, Class<?>> lookupTypes;
@@ -209,7 +208,6 @@ public OptimizedTruffleRuntime(TruffleCompilationSupport compilationSupport, Ite
         this.compilationSupport = compilationSupport;
         this.extraLookupTypes = extraLookupTypes;
         List<OptionDescriptors> options = new ArrayList<>();
-        this.loopNodeFactory = loadGraalRuntimeServiceProvider(LoopNodeFactory.class, options, true);
         EngineCacheSupport support = loadEngineCacheSupport(options);
         this.engineCacheSupport = support == null ? new EngineCacheSupport.Disabled() : support;
         this.previousEngineCacheSupportOptions = engineCacheSupport.getEngineOptions();
@@ -640,11 +638,16 @@ public LoopNode createLoopNode(RepeatingNode repeatingNode) {
         if (!(repeatingNode instanceof Node)) {
             throw new IllegalArgumentException("Repeating node must be of type Node.");
         }
-        return getLoopNodeFactory().create(repeatingNode);
+        return OptimizedOSRLoopNode.create(repeatingNode);
     }
 
+    /**
+     * @deprecated do not use just here for compatibility with older SubstrateTruffleRuntime.
+     */
+    @SuppressWarnings("static-method")
+    @Deprecated
     protected final LoopNodeFactory getLoopNodeFactory() {
-        return loopNodeFactory;
+        return null;
     }
 
     public final EngineCacheSupport getEngineCacheSupport() {