Remove dead code

Author: eregon

src/main/java/org/truffleruby/core/objectspace/ObjectSpaceNodes.java

@@ -272,12 +272,6 @@ Object defineFinalizer(RubyDynamicObject object, Object finalizerCFunction, Obje
 
             return nil;
         }
-
-
-        @TruffleBoundary
-        private void startSharing() {
-            getContext().getSharedObjects().startSharing(getLanguage(), "creating finalizer");
-        }
     }
 
     @CoreMethod(names = "undefine_finalizer", isModuleFunction = true, required = 1)

src/main/java/org/truffleruby/language/loader/RequireNode.java

@@ -346,17 +346,6 @@ private Throwable searchForException(String exceptionClass, Throwable exception)
         return null;
     }
 
-    @TruffleBoundary
-    private String getBaseName(String path) {
-        final String name = new File(path).getName();
-        final int firstDot = name.indexOf('.');
-        if (firstDot == -1) {
-            return name;
-        } else {
-            return name.substring(0, firstDot);
-        }
-    }
-
     public boolean isFeatureLoaded(Object feature) {
         final Object included = isInLoadedFeatures
                 .call(coreLibrary().truffleFeatureLoaderModule, "feature_provided?", feature, true);